Which function has the most x-intercepts?

a.) f(x)
b.) g(x)
c.) h(x)
d.) all three functions have the same number of x-intercepts

There exists a similar question where the graphs of f(x) and g(x) are given with the equation of h(x). From the graphs, g(x) intersected the x-axis four times and f(x) is an infinitely extending wave. The degree of the equation for h(x) is three. From these, the answer should be letter "A. f(x).

A= r2 × 3.14 7x7 ↓ ↓ 49 × 3.14 = 153.86 → 153.9

The expression of this would be 3.75x+y= 23