What is the change that occurs to the parent function f(x)=x^2 given the function f(x)=3x^2-2

Graph is compressed by a factor of 3 and moves 2 units up

Graph is stretched by a factor of 3 and moves 2 units down

Graph is compressed by a factor of 3 and moves 2 units down

Graph is stretched by a factor of 3 and moves 2 units up