Please solve this using please Excel Solver feature and explain your work as you go along

Given the following problem Maximize: 2A2B+3C ST:A+B+C=0 Use the sensitivity report to answer the following 4 questions: i. How would the objective function (value) change if 1 unit of A is forced into the solution? =3 points. ii. For the first constraint, over what range of RHS values is the solution optimal? 2 points iii. For the third constraint, over what range of RHS values is the solution optimal? 2 points iv. What happens to the objective function (value) if the RHS of constraint 2 increases by 1 , and the RHS of constraint 3 decreases by 13 points