1. William Henderson Johnson III just died with a will leaving "all of my earthly belongings to Stuart for life, remainder to Stuart's lineal descendants as are alive on January 1, 2010."

Who cannot serve as the measuring life to validate the contingent remainder held by "Stuart's lineal descendants as are alive on January 1, 2010"?

• Stuart.
• Stuart's current wife.
• Any of Stuart's living children.
• Any of Stuart's children who are born after William died but before January 1, 2010.