Consider the LPP, with objective function optimize \(Z=2 x-y+5\) subject to constraints \(3 x+4 y \leq 60 ; x+3 y \leq 30 ; x, y \geq 0\). If the corner points of feasible region are \(A(0,10), B(12,6), C(20,0)\) and \(O(0,0)\), then match List I with List II:

LIST 1	LIST 2
Minimum value of Z	45
Maximum value of Z	50
The sum of minimum and maximum value of Z	-5
Maximum of Z - Minimum of Z	40

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.