GPS satellite orbiting the earth at an altitude of about _ _ _ _ _ above the surfaceof earth.

GPS satellite orbiting the earth at an altitude of about _ _ _ _ _ abo

1.	GPS satellite orbiting the earth at an altitude of about _ _ _ _ _ above the surfaceof earth.
A.	19,200 Km
B.	20,200 Km
C.	21,200 Km
D.	22,200 Km
Answer» C. 21,200 Km