Match each expression with an equivalent expression

12r+t - 4r+6t

(12r+2t) - (4r+10t)

12 (r+t) - 6 (r+t) +4(r+t) - 2 (r+t)

Answers to choose from
8 (r-t)
14r-14t
8(r+t)
16r+8t
8r+7t