Answer this question please. I do not need an explaination. Thank you.

The Furniture City (FC) company makes 3 kinds of couches: (1) Standard, (2) Deluxe, and (3) Luxury styles. Each couch goes through 3 production departments: (1) Cutting and Coloring, (2) Assembly, and (3) Finishing. The total number of hours available each month in each of the above departments is 500 . 700 and 400 , respectively. The time (in hours) required by 3 departments for making each couch and the profit per couch are listed below. The company has a contract of supplying at least a total of 150 Standard and Luxury couches per month. The company would like to make a production plan to maximize its total profit. Define S, D, L as the variables for the numbers of Standard, Deluxe and Luxury couches produced by the company. Then the corresponding LP model is built as follows: Max200S+300D+400L All variables are non-negative. When the above LP model is solved with Excel, we see the following Sensitivity Report. Which constraints are binding? Constraint 3 only Constraints 2 and 4 Constraints 1 and 3 Constraints 1 and 2 Constraints 3 and 4