How Did the Inner Planets,Venus and Earth,acquire Their Original Atmospheres

Multiple Choice

How did the inner planets,Venus and Earth,acquire their original atmospheres?

A) Capture of solar-wind gases from the Sun as they streamed past the planets
B) The impact and melting of icy comets and asteroids from the planetary system and perhaps beyond
C) Gravitational capture of material from the original solar nebula by the planets
D) Outgassing of the planets through volcanoes and other vents