By interchanging the given two signs which of the following equation will be not correct? - and $$\div$$

A

$$12 - 4 + 11 \times 3 \div 8 = 28$$

B

$$35 - 5 + 8 \div 4 \times 3 = 3$$

C

$$20 \times 8 - 4 \div 2 + 7 = 50$$

D

$$10 + 8 \times 6 - 4 \div 2 = 20$$