Eclipsing Binaries Are Less Common Than Spectroscopic Binaries Because

Multiple Choice

Eclipsing binaries are less common than spectroscopic binaries because:

A) their orbital planes must be nearly edge on from our perspective.
B) their orbital planes must be nearly face on from our perspective.
C) both stars must have the same mass.
D) both stars must have the same diameter.
E) both stars must be spectral type O or B.