Hubble's Law Astronomy?

[gilbert]

Which of the following is an implication of Hubble's Law?

A) The recession velocity of a galaxy doubles as the distance of the galaxy doubles
B) The Universe is expanding
C) The Universe started in a hot dense state
D) All of the answers are correct
E) Only the recession velocity of a galaxy doubles as the distance of the galaxy doubles and the Universe are expanding are implied by Hubble's law.

I marked A.

[Starski]

I'd have gone with D. If the Universe is expanding, it must have been smaller in the past.