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

page $12-37$Tiana sells the stock for $$40,000.$

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B$.$Tiana sells the stock for $$80,000.$

C$.$Tiana sells the stock for $$65,000.$