Use the Maximum/minimum Finder on a Graphing Calculator to Determine $f(x)=x^{4}-3 x^{3}-21 x^{2}+74 x-2$

Multiple Choice

Use the maximum/minimum finder on a graphing calculator to determine the approximate location of all local extrema.
- $f(x) =x^{4}-3 x^{3}-21 x^{2}+74 x-2$

A) Approximate local maximum at 1.577; approximate local minima at -3.108 and 3.721
B) Approximate local maximum at 1.536 ; approximate local minima at -3.157 and 3.69
C) Approximate local maximum at 1.604; approximate local minima at -3.089 and 3.735
D) Approximate local maximum at 1.671 ; approximate local minima at -3.163 and 3.704