Under Colorado law as interpreted In re Marriage of Olar, does a spouse have a marital property interest in the other spouse's attainment of a professional degree?

A. No, since a professional degree is a matter of personal achievement and enhanced future earning capacity and is not a property interest.

B. No, but one spouse's contributions to the other's attainment of a professional degree may form the basis for spousal maintenance.

C. Yes, since a professional degree is an asset with value that was earned through labor during the marriage.

D. Both (a) and (b).