Isabelle transfers property with a tax basis of $250 and a FMV of $400 to a corporation in exchange for 100% of the corporation's stock in a transaction that qualifies for deferral under Code Sec. 351. The corporation assumed a liability of $50 on the property transferred. (Assume the liability has a business purpose and that none of the debt is personal debt.) What is the gain or loss recognized by Isabelle in the exchange? Select one: A. $100 gain B. \$250 gain C. \$0 D. \$50 gain