A programmer wrote the program below. The program uses a list of numbers called numList. The program is intended to display the sum of the numbers in the list. In order to test the program, the programmer initializes numList to [0, 1, 4, 5].
The program displays 10, and the programmer concludes that the program works as intended.

set! sum = numList [1]
FOR EACH value IN numList
set! sum = sum + value
DISPLAY sum

Which of the following is true?

A) The conclusion is correct; the program works as intended.
B) The conclusion is incorrect; the program does not display the correct value for the test case [0, 1, 4, 5].
C) The conclusion is incorrect; using the test case [0, 1, 4, 5] is not sufficient to conclude the program is correct.
D) The conclusion is incorrect; using the test case [0, 1, 4, 5] only confirms that the program works for lists in increasing order.