Answer:
D. None of the above
Step-by-step explanation:

P.S. hope it helped. If you have any questions, I'll be glad to answer them❤
Because if you did not you would not have a exact answer.
C.if the user can only enter functions of the form f(x+k), what are all the values of k that would result in the arrow clearing the castle wall
Your answer would be 6 cm