An ideal Black-body at room temperature is thrown into a furnace. It is observed that

Options

A. cannot be distinguished initially and is the darkest body at a later time.
B. is the darkest body at all times.
C. initially is the darkest body and at later times, it cannot be distinguished.
D. initially is the darkest body and at later times, it is the brightest body.

Answer

D

Explanation

Charcoal in the furnace glows the same colour because it is at about same temperature.