Construct a linear equation with infinite solutions, given a solution statement 12=12 and a variable statement 7x=7x Which of the following is a linear equation with these characteristics?

A. 4+7x+6=3x+10+4x
B. 3x-12+4x=8+7x-20
C. 7x+12=6+7x+6
D. 1+6x+11=16+6x-2