A
B
C
D
Explanation
Correct answer: B.
Choice B is correct. It's given that the function is defined by . The value of when can be found by substituting for in , which yields , or . Therefore, when , the value of is .
Why the other choices are wrong
Choice A
Choice A is incorrect. This is the value of , not the value of when .
Choice C
Choice C is incorrect and may result from conceptual or calculation errors.
Choice D
Choice D is incorrect. This is the value of , not the value of when .