Answer: $480
Step-by-step explanation:
As Antoine transferred a property with a tax base of $505 for the stock, this is the new tax base the stock.
However, because the corporation assumed a liability of $25 on the property transferred, that $25 must be accounted for in the tax basis as a result of the transfer.
It is accounted for by simply deducting it from the Tax base,
= 505 - 25
= $480.
Antoine's tax basis in the stock received in the exchange is $480.