Use the graph of f to estimate the local maximum and local minimum.
a quartic graph is shown. the graph intercepts the x axis at approximately -2.8, 0, and 2.8.

a. local maximum: ∞ local minima: (-2,-4) and (2, -4)
b. local maximum: (0,0); local minimum: (-2,-4)
c. no local maximum; local minimum: (2,-4)
d. local maximum: (0,0); local minima: (-2,-4) and (2, -4)