Martina is solving the equation 4x - 11 = 2x + 391
Here are the first steps of her solution

4x - 11 = 2x + 391
4x = 2x + 402
2x = 402

what did Martina do to get 2x = 402?

A. divided both sides by 2
B. divided the left side by 2x
C. subtracted 2x from both sides
D. subtracted 2x from the left side and added 2x to the right side