Which choice is equivalent to the expression below?
5x sqrt 2 - 2 sqrt 2 + 2x sqrt 2
A7x sqrt 2 - 2 sqrt 2
B2x^2 sqrt 2
C3x sqrt 2
D7x^2 sqrt 2
5x sqrt 2 - 2 sqrt 2 + 2x sqrt 2
A7x sqrt 2 - 2 sqrt 2
B2x^2 sqrt 2
C3x sqrt 2
D7x^2 sqrt 2