Which two mathematical signs should be interchanged to make the given equation correct?

$$(63 \times 21) + 8 + 99 \times 11 \div 16 + (12 \times 4) = 158$$

A

$$+$$ and $$-$$

B

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

C

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

D

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