Answer:
A. $30,000
Step-by-step explanation:
Jack realises gain of ( 100000 FMV of stock + 30000 FMV of car - 75000 Adjusted basis )
$ 55000
Jack recognises gain of $ 30000 i.e the FMV of the property ( car ) other than the stock received.
Therefore, The amount of gain that R must recognize on the exchange is $30,000.