Q4-7Pts) Critical Sections \& Synchronizations [1] Suppose there are two threads and each one does the following: lock acquireo) (disable interrupts; ) Critical Section lock release() \{ enable interrupts; \} A. Is Spinlock (Busy Waiting) is avoided or still a major problem with the above code. If there is a multiprocessor, do you think the above code is still hold in satisfying the mutual exclusion conditions between threads on different CPUs