Details of cost for make or buy decision are shown in the below graph. A discount is offered for volume of purchase above ‘V’. which one of the following ranges would lead to the economic decision?
Buy a, b Make
(a) 1 and 2 3 and 4
(b) 1 and 3 2 and 4
(c) 2 and 4 1 and 3
(d) 1 and 4 2 and 3