Which of the Following Best Describes What the Following Bare

Multiple Choice

Which of the following best describes what the following Bare Bones program does?
$\begin{array} { l } \text { copy } \mathrm { X } \text { to } \mathrm { Z } \\\text { clear } \mathrm { X } \\\text { incr } \mathrm { X } \\\text { while } \mathrm { Z } \text { not } 0 \text { : } \\\text { clear } \mathrm { X } \\\text { decr } \mathrm { Z }\end{array}$

A) It changes the value of X to 1.
B) If the starting value of X is 0, it sets the value of X to 0. Otherwise, it sets the value of X to 1.
C) If the starting value of X is 0, it sets the value of X to 1. Otherwise, it sets the value of X to 0.
D) It ultimately leaves X the same as it was when the program starteD.