Robert Trades an Office Building Located in Tennessee to John

Robert trades an office building located in Tennessee to John for an apartment complex located in New Jersey.Details of the two properties:
$\begin{array}{lrr}&\text { Justin } & \text { John } \\& \underline {\text { Tennessee } } & \underline { \text { N. Jersey } } \\\text { Fair market value } &\$ 9,000,000 & \$ 4,000,000 \\\text { Adjusted basis } &3,000,000 & 3,000,000 \\\text { Liabilities transferred with property } &2,000,000 & -0-\end{array}$
In addition,John pays Robert $3,000,000 cash as part of this transaction.What is the gain (loss)recognized by Robert in this transaction and what is his basis in the New Jersey property?
$\begin{array}{ll}\text { Gain Recognized } & \text { Adjusted B asis } \\a.\$ 6,000,000 & \$ 4,000,000 \\b.\$ 5,000,000 & \$ 3,000,000 \\c.\$ 3,000,000 & \$ 2,000,000 \\d.\$ 5,000,000 & \$ 4,000,000\end{array}$
e. Some other amounts