Please answer step by step and clearly

The financially important reaction to produce the valuable product B was carried out in a simple facility runs by fl

by$-$night company. This company is on a short budget and has very little money to purchase equipment. Fortunately,there is an another company providing surplus reactor. One can get reactors from this company. The reaction, $AB+C,$ takes place in the liquid phase. Below is the Levenspiel plot for this reaction. You have up to $7,000$ USD to useto purchase reactors from those given below.