3. Determine the solution space and the optimum solution of the Reddy Mikks model for each of the following independent changes:

(a) The maximum daily demand for exterior paint is at most 2.5 tons.

(b) The daily demand for interior paint is at least 2 tons.

(c) The daily demand for interior paint is exactly 1 ton higher than that for exterior paint.

(d) The daily availability of raw material Ml is at least 24 tons.

(e) The daily availability of raw material Ml is at least 24 tons, and the daily demand for interior paint exceeds that for exterior paint by at least 1 ton.