If the signs $$+$$ and $$\div$$ are interchanged, then which of the following equations would be correct?

A

$$12 + 4 - 4 \div 2 = 3$$

B

$$9 \div 9 - 9 + 9 = 9$$

C

$$16 \div 4 - 10 + 2 = 15$$

D

$$12 \div 3 + 9 - 9 = 4$$