A product manager ranks requirements by the number of support tickets each has generated. What is the weakness of this signal?

• ATicket counts are usually recorded inaccurately.
• BTickets should be weighted by how long each took to resolve.
• CThere is no weakness, since tickets come from real customers with real problems.
• DTicket volume measures who complains rather than who has the problem. It is dominated by the customers with the closest relationship and the most time, and it is silent on the people who left rather than raising a ticket.