In January 2002,a Court with the Necessary Subject-Matter Jurisdiction Holds

In January 2002,a court with the necessary subject-matter jurisdiction holds Marvin mentally incompetent and appoints a guardian for him.In November 2002,Marvin escapes his guardian's care and takes off on his own.While eating lunch with Clara,who knows about Marvin's condition,Marvin signs an agreement to sell a valuable property he owns.When he signs the contract,Marvin believes that he is the President of the United States signing an important treaty.The agreement between Marvin and Clara is best described as:

A) void.
B) voidable.
C) unenforceable.
D) perfectly valid,if the price Clara pays for the property is fair.