Where in the Sky Would an Observer at the Earth's

Multiple Choice

Where in the sky would an observer at the Earth's equator see the celestial equator?

A) The celestial equator would be at 45 degrees above the northern horizon.
B) The celestial equator would be at 45 degrees above the southern horizon.
C) The celestial equator would coincide with the horizon.
D) The celestial equator would be directly overhead.