Convert the Radian Measure to Degrees $$\frac { \pi } { 2 }$$

Multiple Choice

Convert the radian measure to degrees. Round to the nearest hundredth if necessary.
- $$\frac { \pi } { 2 }$$

A) $\frac { \pi } { 2 }$ 。
B) $90 ^ { \circ }$
C) $90 \pi ^ { \circ }$
D) $1.57 ^ { \circ }$