In a certain code language, '$$+$$' represents '$$-$$', '$$-$$' represents '$$\times$$', '$$\times$$' represents '$$\div$$' and '$$\div$$' represents '$$+$$'. Find out the answer to the following question.
$$100 \times 5 + 15 - 12 \div 6 = ?$$

A

513

B

71

C

-31

D

-154