Rex contributed land to the partnership of Rex, Tex, and Lex Partnership in exchange for a one-third interest in the Partnership. Rex's adjusted basis in the land was $50,000 and its fair market value was $75,000. Rex's Partnership capital account was credited with $75,000. Tex and Lex had each contributed $75,000 cash. Thus, each partner's capital account was $75,000. What is Rex's adjusted basis (outside basis) in his partnership interest?
a. $75,000
b. $50,000
c. $37,500
d. cannot be determined from the facts stated