Which of the mathematical signs should be interchanged in the below equation to make it mathematically correct?
$$24 \div 15 \times 16 + 4 - 18 = 66$$

A

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

B

$$-$$ and $$+$$

C

$$-$$ and $$\times$$

D

$$\div$$ and $$+$$