请选择CBA+]1f'T.`,k(b:C5U/^This black box is heavy. And that green one is ¬¬¬________, too.2L'K1U'r-z(D3`:S
A. heavy2L'K1U'r-z(D3`:S
B. dirty2L'K1U'r-z(D3`:S
C. old2L'K1U'r-z(D3`:S