Which of the following statements about the ranges of f(x)=x2 and g(x)=3x+1 is correct?
a) Both ranges are R.
b) Range of f is [0,∞) while range of g is [1,∞).
c) Range of f is [0,∞) while range of g is R.
d) Range of f is (−∞,0] while range of g is R.