The questions are indicated on the picture

Instruction: Explain or state briey the rule or reason for your answer. 1. T {third person} tells C (creditor) that T will pay the debt if D (debtor). c agrees- Is D released from his obligation to C? 2. Suppose in the above problem, D proposed to C that T would substitute D as a new debtor to which C agreed. is D still liable to C In case of insolvency of T? 3. T paid C the debt of D without objection from the latter. What are the rights of T? 4. Illustrate a mixed novation