Two Identical Objects Are Placed in a Room with a Temperature

Multiple Choice

Two identical objects are placed in a room with a temperature of $20 ^ { \circ } \mathrm { C }$ Object A has a temperature of $50 ^ { \circ } \mathrm { C }$ while object B has a temperature of $90 ^ { \circ } \mathrm { C }$ What is the ratio of the net power emitted by object B to the power emitted by object A?

A) 21
B) 17
C) 1.7
D) 81
E) 2.8