All of the Following Contracts Would Be Illegal, and Not

All of the following contracts would be illegal, and not binding on the parties, except

A) a contract whereby one person agrees to spread False and damaging information about another.
B) a contract whereby one person agrees to sell a banned substance (e.g., cocaine) to another.
C) the act of paying for sexual favours (prostitution) .
D) a contract between camera dealers whereby they agree not to sell a specific model of camera below a specified price.
E) a contract in which a lawyer agrees to represent an accused where the accused did commit the crime.