Determine either True or False or each question and explain your answer (describe the reasons to support your answer).

a. The many to one multithreading model multiplexes many user-level threads to a smaller or equal number of kernel threads.

b. An OS that supports concurrency also supports parallelism and vice versa.

c. in a multithreaded process, the threads share the code section, registers, data, heap, and stack.

d. Each thread maintains its registers, stack, and program counter.

e. Creating a large number of kernel threads causes more overhead and may burden the system performance.

f. We can use either the pthread_join() method of the Pthreads library, or the WaitForSingleObject() Windows API, or the join() method in the Java Thread class to wait for a children thread to finish its execution.