please give me the answer for question number 4. it has 4 parts. I will give thumbs up.

4. The stream data for a process are given in Table. a. Design a heat exchanger network for this problem that achieves maximum energy recovery in the minimum number of units. b. Determine how much steam at a condensing temperature of 180C can be generated by this process c. Sketch the composite curves for the process showing maximum steam generation at 180C. d. Design a network that achieves maximum energy recovery in the minimum number of units and which generates the maximum possible steam at 180C