David and May began a partnership by investing $28,000 and $20,000 in cash, respectively, and during its first year the partnership earned a profit of $42,000. David spends twice as much time running the business as does his partner. What would be the share of each partner in the $42,000 profit if the partners had agreed to a $16,400 per year salary allowance to David and an $18,000 per year salary allowance to May, 10% interest on their beginning investments, and the remainder equally?

a. Davids share, $20,600; Mays share, $21,400.

b. Davids share, $22,200; Mays share, $19,800.

c. Davids share, $21,400; Mays share, $20,600.

d. Davids share, $24,500; Mays share, $17,500.

e. Davids share, $21,000; Mays share, $21,000.