Which of the mathematical signs should be interchanged in the below equation to make it mathematically correct?
$$72 - 12 + 8 \times 6 \div 24 = 30$$

A

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

B

$$-$$ and $$+$$

C

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

D

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