Other Things Equal, Which of the Following Goods Would Have

Other things equal, which of the following goods would have the most inelastic price elasticity of demand?

A) A t-shirt from The Gap (a famous American retail store) .
B) All red t-shirt sold in the U.S.
C) All shirts, of any color, sold in the U.S.
D) A red t-shirt from Macy's (a large department store) .