1. D (debtor) borrowed 10,000 from C (creditor) at 15% interest per annum payable on December 31. Can D require C to accept payment before December 31?
2. D binds himself to give 10,000 to C upon the death of the father of D. Is the obligation of D conditional or one with a period.
3. D obtained a loan from C in the amount of 50,000, payable on August 10. As security for his debt, D mortgaged his car in favor of C. the car, however, was substantially damaged without the fault of D. What rights, if any, does C have under the law? May C demand payment from D even before August 10?