Which statement is true?

a) a desert can form anywhere if rainfall decreases.
b) a desert forms when rainfall decreases in a dry climate.
c) decreased rainfall is a result of a desert, not a cause of one.
d) rainfall is unrelated to the formation of a desert.

A lot of people associate deserts with hot weather, when this is not the case. A desert is a place with little to no rainfall. An example of a desert can actually be Antartica! So my guess would be A, C and D are not possible as rainfall is a cause to form a desert, and if is related to the formation of one. So i would guess A or B, my apologies if im incorrect!