for part a: formulate the problem only

for part b: attach the code from the Julia programming language or write the code used.

Thank you

1. Consider the minimum cost flow problem shown below, where the b, values (net flows generated) are given by the nodes, the cy values (costs per unit flow) are given by the arcs, and the u values (arc capacities) are given between nodes C and D. 1O] 120] 6 I-30 Arc capacities AC:10 BC:25 Others: c 4 10] (a) Formulate this problem. (b) Use Julia to solve this model