Why Would It Be Very Improbable for Our Universe to Have

Multiple Choice

Why would it be very improbable for our universe to have $\varOmega$ _mass + $\varOmega$ _$\wedge$ = 0.9?

A) It would quickly evolve to have a much different value of $\varOmega$ _mass + $\varOmega$ _$\wedge$ .
B) In order to exist,every universe must have $\varOmega$ _mass + $\varOmega$ _$\wedge$ = 1.
C) We know $\varOmega$ _mass = 1,based on the average density of galaxies.
D) The fluctuation in the CBR tells us that $\varOmega$ _mass + $\varOmega$ _$\wedge$ = 0.7.