PLEASE HELP

What is the name of the opposite stereoisomer of the molecule shown
below?
OA. cis-2-butene
OB. 2-butyne
OD. trans-2-butene
C. 2-methylpropene

PLEASE HELP What is the name of the opposite stereoisomer of the molecule shown below OA cis2butene OB 2butyne OD trans2butene C 2methylpropene class=