On December 31 of last year, Henderson gave his son, Norbert, a gift of a 40% interest in a partnership in which capital is a material income-producing factor. For the current calendar year, the partnership's ordinary income was $140,000. Henderson and Norbert were the only partners in the current year. There were no guaranteed payments to partners. Henderson's services performed for the partnership were worth a reasonable compensation of $40,000 for the current year. Norbert has never performed any services for the partnership. What is Norbert's distributive share of partnership income for the current year?
a. $100,000.
b. $84,000.
c. $56,000.
d. $40,000.
e. None of the above