Which of the following are likely to be poor choices for an identifier in a program? Why?

a. x
b. RATE
c. data
d. _abc
e. A

a. x is too short to adequately describe a real world value.
b. RATE suggests a rate of speed, or interest perhaps.
c. data is perhaps a bit generic, nevertheless this writer would allow it.
d. _abc is not a word. It does not bring anything to this writer’s mind.
e. A is too short to adequately describe anything in the real world.
Explanation: The answers to this question are subjective.