The grid below contains a robot represented as a triangle, initially facing toward the top of the grid. The robot can move into a white or gray square but cannot move into a black region.

The figure presents a robot in a grid of squares surrounded by black regions. The robot is represented by a triangle which is initially facing the top of the grid. The path that the robot can take is as follows. Note: Assume all squares are white unless otherwise indicated. The robot can move $3$ squares forward, at which point it reaches an intersection of squares. It can then either move $2$ squares to the right, $2$ squares forward, or $3$ squares to the left. If the robot moves $3$ squares to the left, it can then move $3$ squares downwards at which point it will reach a gray square.

The code segment below uses the procedure goalReached, which evaluates to true if the robot is in the gray square and evaluates to false otherwise.

REPEAT UNTIL$($goalReached$())$

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Which of the following replacements for can be used to move the robot to the gray square?

Responses

IF$($CAN$\_$MOVE$($left$))$

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ROTATE$\_$LEFT$()$

MOVE$\_$FORWARD$()$

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IF$($CAN$\_$MOVE$($left$))\{$ ROTATE$\_$LEFT$()$ MOVE$\_$FORWARD$()\}$

IF$($CAN$\_$MOVE$($forward$))$

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MOVE$\_$FORWARD$()$

ROTATE$\_$LEFT$()$

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IF$($CAN$\_$MOVE$($forward$))\{$ MOVE$\_$FORWARD$()$ ROTATE$\_$LEFT$()\}$

IF$($CAN$\_$MOVE$($left$))$

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ROTATE$\_$LEFT$()$

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MOVE$\_$FORWARD$()$

IF$($CAN$\_$MOVE$($left$))\{$ ROTATE$\_$LEFT$()\}$ MOVE$\_$FORWARD$()$

IF$($CAN$\_$MOVE$($forward$))$

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MOVE$\_$FORWARD$()$

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ELSE

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ROTATE$\_$LEFT$()$

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