If the point (1,4) is on the graph of an equation, which statement must be true?
A. The values x = 1 and y = 4 are the only values that make the
equation true.
B. The values x = 4 and y= 1 make the equation true.
C. There are solutions to the equation for the values x = 1 and x = 4.
D. The values x = 1 and y= 4 make the equation true.