Identify the Maximum and Minimum Values of the Function in the Interval

Multiple Choice

Identify the maximum and minimum values of the function in the interval $[-2 \pi, 2 \pi]$ . Use your understanding of transformations, not your graphing calculator.
- $$y = - \cos 3 x$$

A) Maximum value $= \frac { 1 } { 2 } ;$ minimum value $= - \frac { 1 } { 2 }$
B) Maximum value $= 1$ ; minimum value $= 0$
C) Maximum value $= 3 ;$ minimum value $= - 3$
D) Maximum value $= 1$ ; minimum value $= - 1$