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