Mentally Infirm Sasha Contracts to Purchase a Piano for $2,500

Mentally infirm Sasha contracts to purchase a piano for $2,500 in 60 monthly installment payments.Six months later she tries to void the contract on grounds of mental impairment.A court will:

A) normally void the contract without requiring anything further on Sasha's part.
B) normally void the contract but will require Sasha to return the piano.
C) ordinarily not void the contract unless Sasha had a court-appointed guardian at the time she entered into the contract.
D) not void the contract unless Sasha agrees to have the court appoint a guardian for her.