On July 1, 2014, Robert Forms the Yew Corporation

On July 1, 2014, Robert forms the Yew Corporation. In exchange for 100 percent of the corporation's stock, Robert contributes land with a fair market value of $100,000. Robert acquired the land 5 years ago at a cost of $30,000. At the date of the contribution, the land is subject to a $10,000 mortgage which the corporation assumes. What is the basis of the land to Yew Corporation?

A) $20,000
B) $30,000
C) $90,000
D) $100,000
E) None of the above