On January 1, 2021, Antonio sells stock that has a $50,000 FMV on the date of the sale (basis $75,000) to his son Tiana. On October 21, 2021, Tianasells the stock to an unrelated party. In each of the following, determine the tax consequences of these transactions to Antonioand Tiana:

a. Tianasells the stock for $40,000.

b. Tianasells the stock for $80,000.

c. Tianasells the stock for $65,000.