The Crooked Corporation issued illegal dividends to two shareholders, Joe and Danny. At the time the dividend was paid. Crooked was solvent. Crooked was even solvent after the dividend was paid. Joe knew that the dividend was illegal, but Danny just thought it was a stroke of good luck. Now creditors are suing these two shareholders for the full amount of the dividend. In this situation

a. neither Joe nor Danny has to pay anything to the creditors.
b. Joe must pay the creditors, but Danny may keep the money.
c. both Joe and Danny must pay the creditors.
d. both Joe and Danny must pay the par value of the stock at the time they bought it, but no more than that amount.