Exercise 2.8 Write the full TimeDelay subroutine. Don't forget to add the line retlw 0 at the end of the subroutine. After the two-second delay, the red motorists' light must be turned on, and the amber one off. The red pedestrian light must be turned off, and the green one turned on. Exercise 2.9 What two lines will make the required output changes? Exercise 2.10 Now an eight-second delay is required. What two lines will create the required delay? Exercise 2.11 After the eight-second delay the red motorists' light should be replaced for the amber one. What two lines accomplish this