If We Went Back in Time 10 Billion Years,would We

Multiple Choice

If we went back in time 10 billion years,would we expect Hubble's constant to be identical to the present-day Hubble constant?

A) Yes,a constant never changes.
B) No,Hubble's constant is roughly equal to 1 divided by the age of the universe,and 10 billion is a substantial enough number to notice a difference.
C) If we went back further in time,it would be different,but 10 billion years is not enough.
D) It would only change if we went 10 billion years into the future.