Andy, Brent, Craig, Dale, and Elee borrowed money from Faye. The contract stipulated a solidary one, but the debtors were bound under different terms and conditions. Faye brought an action to recover from Andy whose obligation was already due. Andy claims that he cannot be made to pay because the obligations incurred by his solidary co-debtors were not yet due. In a solidary obligation wherein the debtors are bound by different terms and conditions, may the creditor sue one of them?