Determine the amount of taxable dividend, nontaxable distribution, and capital gain for the distributions made in each of the following cases:
a. Corporate E& P of $ 10,000, shareholder stock basis of $ 12,000, distribution of $ 6,000.
b. Corporate E& P of $ 7,500, shareholder stock basis of $ 7,000, distribution of $ 6,500.
c. Corporate E& P of $ 16,000, shareholder stock basis of $ 5,000, distribution of $ 17,000.
d. Corporate E& P of $ 14,000, shareholder stock basis of $ 11,000, distribution of $ 26,000.