D is indebted to C for P10,000. Which of the following is incorrect under the circumstances?

2 points

The guarantor may bind himself to guarantee D's obligation to the extent of P8,000.

The guarantor may bind himself to guarantee the whole obligation of D.

Should the guarantor constitute a real mortgage as security for his guaranty and D could not pay, C can foreclose the mortgage.

Should the guarantor bind himself to guarantee D's obligation to the extent of P12,000, the guarantor's obligation shall be reduced only to the extent of P10,000.