[15] Question 3- (Non programming): When executing code from multiple threads on a uniprocessor the code are interleaved to make it appear each thread is executing simultaneous. This leads to problems when the code share data common to the threads. One thread may be interrupted at any time, and the shared data it is working on may be modified by another thread, and later the original thread continue unaware of the interrupt and modification of data. This may lead to errors. - Find all such problems in the code given below. - What are the possible proper mechanisms to correct execution in all cases? - Apply proper mechanisms to secure correct execution. - Identify all critical sections? - Improve on your solutions to allow for the most efficient execution when more processors are available (minimize the need for threads to wait for each other)