Suppose f(x)=x^2 and g(x)=(1/3x)^2 which statement comepare the graph of f(x) to the graph of g(x)

a. the graph of g(x) is the graph of f(x) horizontally compressed by a factor of 3
b. the graph of g(x) is the graph of f(x) shifted up (1/3) units right
c. the graph of g(x) is the graph of f(x) vertically stretched by a factor of 3
d. the graph of g(x) is the graph of f(x) horizontally stretched by a factor of 3