Please explain the answer. Will upvote if answer works. Appreciate it!

Q3. (Multiple Choice) (10 pts.) (Excel Solver Question) The shadow price is calculated to be 3 for a less than or equal to constraint in a maximization LP problem, this means: a) if the coefficient of the objective function is increase by 3 then the right-hand side for that constraint must be increased by 1. b) if the right-hand side for that constraint is increased by three then the optimal objective function value is increase by 1 dollar c) if the right-hand side for that constraint is increased by three then the optimal objective function value is increase by 3 dollars d) if the coefficient of the objective function is increase by 1 then the right-hand side for that constraint must be increased by 3. e) All of the above is correct f) None of the above is correct