Can you please answer part c of this question

The process stream data for a heat recovery network is given below: For a minimum approach temperature of 10C. (a) Determine the problem table, hence QHminandQC,min. (b) Design a network with maximum energy recovery and the corresponding minimum units. (c) Design a network with the minimum number of units by allowing energy relaxation across the pinch. The process stream data for a heat recovery network is given below: For a minimum approach temperature of 10C. (a) Determine the problem table, hence QHminandQC,min. (b) Design a network with maximum energy recovery and the corresponding minimum units. (c) Design a network with the minimum number of units by allowing energy relaxation across the pinch