The earth's radiation is often referred to as ________radiation, while the sun's radiation is often referred to as _________radiation.

The earth's radiation is often referred to as ________radiation, while

1.	The earth's radiation is often referred to as ________radiation, while the sun's radiation is often referred to as _________radiation.
A.	hortwave, longwave
B.	hortwave, shortwave
C.	ongwave, shortwave
D.	ongwave, longwave
Answer» D. ongwave, longwave