Given that the three variables A = 5, B = 3, C =7 are all integer global variables, what will be the results in those variables, when the following sequence of instructions are executed in the indicated order, knowing that we have three processes P1, P2 and P3 containing the below instructions?

P1:                  A = A + B * 2

P2:                  B = C + A * 3

P3:                  C = A * 2 + B * 3

a)      P1 is run first, then P2, then P3             

b)     P2 is run first, then P1, then P3            

c)    P3 is run first, then P2, then P1      

What is the difference between User Level Thread and Kernel Level Thread?

Define Multithreading.