Question with keypad

Columns Status User Input $($Button Pressed Expected value in KEY $->$ ROWS KEY$->$COLS $=0$xx$36$ KEY$->$COLS $=0$xx$3$ NOTHING KEY$->$COLS $=0$xx$31$ KEY$->$COLS $=0$xx$61$ KEY$->$COLS $=0$xx$66$ KEY$->$COLS $=0$xx$6$ # KEY$->$COLS $=0$xx$5$ NOTHING KEY$->$COLS $=0$xx$50$ KEY$->$COLS $=0$xx$73$

Columns status $=$ The instruction the microcontroller just executed. User Input $=$ The physical action taken by the user in the connect keypad. Expected Value $=$ What the microprocessor will read on the input lines.

$24)$ Assuming the following setup determine which PORT B lines have the pull up resistors enabled.