A restaurant owner plans to replace the restaurant's tables and chairs, which are currently of a generic design, with sturdier models from a manufacturer in Maine. The newer tables and chairs are more expensive, but they are extremely durable, so the owner expects to have to replace them far less frequently, saving money in the long term.
Which of the following must be studied in order to evaluate the argument presented above?
【选项】
The amount of money the owner has already spent on the current set of tables and chairs
选项是否正确？