What Is the Effect of Sean's Bankruptcy, If Any, on the Debt

What is the effect of Sean's bankruptcy, if any, on the debt owed by Sean?

A) Sean may assert his bankruptcy as a defense against paying the debt.
B) Sean cannot assert his bankruptcy as a defense because it is a suretyship agreement.
C) Sean cannot assert his bankruptcy as a defense because it is a guaranty agreement.
D) Sean may only assert the bankruptcy as a defense if he filed for bankruptcy based on excessive medical bills.
E) Sean may only assert the bankruptcy as a defense only if he filed for bankruptcy protection within one year of agreeing to liability on Allison's loan.