Use a Calculator to Give the Real Number Value $$y = \cos ^ { - 1 } ( - 0.3907 )$$

Multiple Choice

Use a calculator to give the real number value. Round the answer to 7 decimal places.
- $$y = \cos ^ { - 1 } ( - 0.3907 )$$

A) $2.0079383$
B) $1.9721882$
C) $- 1.1698423$
D) $1.9206367$