Which two signs should be interchanged, as given in the options. to make the following equation correct?
$$7 \div 3 - 4 + 6 \times 2 = 20$$

A

$$-$$ and $$+$$

B

$$+$$ and $$\times$$

C

$$\div$$ and $$-$$

D

$$\div$$ and $$\times$$