The questions are indicated on the picture

Instruction: Explain or state briefly the rule or reason for your answer. 1. D(debtor) owes C (creditor) P10,000 with G as guarantor. On the due date of the obligation, T, a third person, offered to pay the obligation of D. Can C legally refuse to accept the payment? How about an offer of payment from G? 2. M (maker) issued a promissory note for P10,000 in favor of P (payee) who lost the note which was found by T who demands payment from M. M did not know that the note was lost by P. Is M has the right to refuse the demand of T? 3. D owes C P10,000. Without the knowledge of C, in good faith paid to T his obligation to C. Is D required by law to prove that the payment has been received by C in order to be released from his liability? 4. D owes C P20,000 in payment for which C accepts a check from D. On the ground that a check is not legal tender, C later insisted that D pay him in cash. Is D justified in rejecting this demand of C