Kindly help me solve this. And also please to better mu understanding kindly also do MRS and MRT still using the details below

The following table shows hypothetical figures for total utility derived from consumption of three goods, A, B and C by a farmer. The prices of A, Band C are Ksh. 5.00, Ksh. 3.00 and Ksh. 2.00 respectively. No. of units Total Utility Total Utility Total Utility Consumed TUA TUB Tuc 72 60 64 4 120 104 120 6 160 136 160 195 160 188 225 180 204 245 188 216 14 260 192 224 Determine the marginal utilities for each good b) Find the optimal quantities of each good for consumption Find the total expenditure at the optimal level of consumption What is the effect of a reduction in the price of A both in the short-run and the long-run equilibrium