After interchanging the given two numbers ( not digits ) what will be the values of expression (I) and (II) respectively?
6 and 4
I. $$10 \times 6 - 30 \times 4 + 20$$
II. $$8 - 4 \times 5 + 6 \times 2$$

A

10 and -6

B

12 and -6

C

20 and 55

D

55 and -20