Although Hank is retired, he is an excellent handyman and often works part time on small projects for neighbors and friends. Last week his neighbor, Mike, offered to pay Hank $1,130 for minor repairs to his house. Hank completed the repairs in December of this year. Hank uses the cash method of accounting and is a calendar-year taxpayer. Compute Hank's gross income for this year from each of the following alternative transactions:

A. Mike paid Hank $410 in cash in December of this year and promised to pay the remaining $720 with interest in three months.

B. Mike gave Hank tickets in December to the big game in January. The tickets have a face value of $50, but Hank could sell them for $1,030. Hank went to the game with his son.

C. Mike bought Hank a new set of snow tires. The tires typically sell for $1,130, but Mike bought them on sale for $1,017.