Which two signs and two numbers should be interchanged to make the following equation correct?
$$840 \div 38 − 7 + 10 \times 12 = 462$$

A

12 and 10, $$\div$$ and $$+$$

B

12 and 38, $$\times$$ and $$-$$

C

12 and 7, $$+$$ and $$\times$$

D

840 and 10, $$+$$ and $$-$$