Which of the following systems is equivalent to the given system?
2/3x - y = 2
x + 1/2 y = -3

A. 2x - 3y = 6 and 2x + y = 6
B. 6x - 3y = 6 and 2x + y = 10
C. 2x - 3y = 6 and 2x + y = -6