What Is the Next Step in Solving $4 x ^ { 2 } - 12 x = 9$

Multiple Choice

What is the next step in solving $4 x ^ { 2 } - 12 x = 9$ by completing the square?

A) Add -9 to each side of the equation.
B) Take one-half of -12 and add to each side of the equation.
C) Take one-half of 4 and square it and then add this number to each side of the equation.
D) Divide each side of the equation by 4 .