After interchanging the given two numbers what will be the value of equation (I) and (II) respectively?

8 and 2
I. $$3 + 6 - 8 \times 4 \div 2$$
II. $$4 \div 6 \times 9 + 2 - 8$$

A

12 and 8

B

9 and 15

C

9 and 81

D

8 and 12