What is the standard form of the equation y = x/3 + 5

The standard form of the equation y = x/3 + 5 is:

y - (1/3)x = 5

A. - x - 3y = 15

B. x = 15 - 3y
C. x - 3y = -15
D. x = -15 + 3y

C. x - 3y = -15