The ISS (International Space Station) orbits Earth about once every...? Mcqs

The ISS (International Space Station) orbits Earth about once every...?

(A) 60 minutes at an altitude of about 400 km

(B) 60 minutes at an altitude of about 500 km

(C) 90 minutes at an altitude of about 400 km

(D) 90 minutes at an altitude of about 500 km