Question 4Choose the correct answer after considering the following statements:1. Using mutexes and lock guards (like unique_lock) makes multithreading applications simple to program.2. Proper use of mutexes can help prevent data races.3. Using a unique_lock with a mutex is an example of Resource Acquisition Is Initialization (RAII)O Only 2 and 3 are trueO Only 1 is trueO Only 2 is trueO Only 3 is trueO Only 1 and 3 are true

To choose the correct answer from the given questions on mutex and unique_lock.The correct answer is: Only 2 and 3 are True Explanation: Mutexes (mutual exclusion locks) can protect data from inconsistencies caused by race situations. When two or more threads must conduct operations on the same memory location, yet the outcomes of the computations are dependent on the order in which these actions are performed, a race condition occurs. The RAII standard is followed by the C++ library classes that manage their own resources: std::string, std::vector, std::jthread, and many others acquire their resources in constructors (which throw exceptions on errors), release them in destructors (which never throw), and don't require explicit cleanup. Additionally, the standard library includes a number of RAII wrappers for managing user-supplied resources: To manage mutexes, use std::lock guard, std::unique lock, and std::shared lock.