What is the formula of DDT?

• A. 1,1,1-Trichloro-2,2-bis(p-chlorophenyl) ethane
• B. 1,2,2-Trichloro-2,2-bis(p-chlorophenyl) methane
• C. 1,1,1-Trichloro-2,2-bis(p-chlorophenyl) propane
• D. None of the mentioned