Which of the Following Must a Buyer Do in Obtaining

Which of the following must a buyer do in obtaining cover?

A) Demonstrate good faith in obtaining the substitute goods,and pay a reasonable amount for the substitute goods
B) Pay a reasonable amount for the substitute goods,and act without unreasonable delay in purchasing the substitute goods
C) Act without unreasonable delay in purchasing the substitute goods,and purchase goods that are reasonable substitutes
D) Pay a reasonable amount for the substitute goods,act without unreasonable delay in purchasing the substitute goods,and purchase goods that are reasonable substitutes
E) Demonstrate good faith in obtaining the substitute goods,pay a reasonable amount for the substitute goods,act without unreasonable delay in purchasing the substitute goods,and purchase goods that are reasonable substitutes.