Use Calculus and a Graphing Calculator to Find the Approximate $f(x)=x^{4}-3 x^{3}-21 x^{2}+74 x+33$

Multiple Choice

Use calculus and a graphing calculator to find the approximate location of all relative extrema.
- $f(x) =x^{4}-3 x^{3}-21 x^{2}+74 x+33$

A) Approximate local maximum at 1.675; approximate local minima at -3.066 and 3.747
B) Approximate local maximum at 1.692; approximate local minima at -3.184 and 3.73
C) Approximate local maximum at 1.595 ; approximate local minima at -3.181 and 3.701
D) Approximate local maximum at 1.604; approximate local minima at -3.089 and 3.735