Simply answer this question

Tyler is trying to decide between two mobile phone carriers. Carrier A requires him to pay $500 for the phone and monthly charges of $80 for 30 months. Carrier B wants him to pay $400 for the phone and monthly charges of $90 for 24 months. Assume he will keep replacing the phone after his contract expires. His cost of capital is 3%. Based on cost alone, which carrier should he choose? The equivalent monthly cost for Carrier A is s. The equivalent monthly cost for Carrier B is s.Tyler should choose Carrier A because it is the cheaper option (Round to the nearest cent.)