Rewrite each of the following arithmetic expressions to take advantage of a concurrent processing system with five available processors, and then use pseudocode to show the order of your calculations. Use the terms COBEGIN and COEND to delimit the concurrent sections.

a. B*R+Y*Z-N*M+C2

b. B*(R+Y)*(Z-N)*M+C2

c. (A*(B*C)*(D*E)+F+G-H)

d. ((J+K*L*M*N)*I)