If 2x-3y=6,then 6y-4x=?

A -12

B -6

C 6

D 12

Correct Answer: Option A

দেওয়া আছে ,2x-3y=6
অতএব , 6y-4x=-4x+6y
                           =-2(2x-3y)
                           =-2.6
                          =-12