Erica is a successful video game programmer. She wants to gift $$50,000$ of CHIP stock to her son, Sebastian. Erica has used all of her lifetime exemption for gift tax purposes. She also has made gifts to Sebastian this year that exceed the annual exclusion. Erica will have to pay gift tax of $$22,500$ on the transfer. Her basis in the CHIP stock is $$36,000.$ What is Sebastian's basis in the stock?

A$.$ $$36,000$

$$42,300$

$$50,000$

D$.$ $$52,200$