Which two signs should be interchanged to make the below equation mathematically correct?
$$54 \times 6 - 36 \div 12 + 27 = 24$$

A

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

B

$$2. +$$ and $$\div$$

C

$$3. -$$ and $$+$$

D

$$4. +$$ and $$\times$$