Robert and Diane, husband and wife, live in Pennsylvania, a common law state. They purchased land as joint tenants in 2007 for $300,000. In 2011, Diane dies and bequeaths her share of the land to Robert. The land has a fair market value of $450,000. What is Robert's adjusted basis for the land?
a. $300,000.
b. $375,000.
c. $450,000.
d. $750,000.
e. None of the above.