the program segment below is intended to move a robot in a grid to a gray square. the program segment uses the procedure goalreached, which evaluates to true if the robot is in the gray square and evaluates to false otherwise. the robot in each grid is represented as a triangle and is initially facing left. the robot can move into a white or gray square but cannot move into a black region. a 15-line code segment reads as follows. line 1: repeat until, open parenthesis, goal reached, open parenthesis close parenthesis, close parenthesis. line 2: open brace. line 3: if, open parenthesis, can underscore move, open parenthesis, forward, close parenthesis, close parenthesis. line 4: open brace. line 5: move underscore forward, open parenthesis close parenthesis. line 6: close brace. line 7: if, open parenthesis, can underscore move, open parenthesis, right, close parenthesis, close parenthesis. line 8: open brace. line 9: rotate underscore right, open parenthesis close parenthesis. line 10: close brace. line 11: if, open parenthesis, can underscore move, open parenthesis, left, close parenthesis, close parenthesis. line 12: open brace. line 13: rotate underscore right, open parenthesis close parenthesis. line 14: close brace. line 15: close brace. for which of the following grids does the program not correctly move the robot to the gray square?