What is the difference between std::async and std::thread in C++ multi-threading?

A. std::async returns a std::future object representing the result of the asynchronous operation, while std::thread does not return anything

B. std::thread allows you to specify the execution policy, while std::async does not

C. std::async creates a new thread and executes a function asynchronously, while std::thread simply creates a new thread

D. std::thread provides more control over thread creation and management compared to std::async

Answer: Option C