Answer:
billable rates
Explanation:
Since in the question it is mentioned that Alice is not sure about the labor rate that used in the project budget so here the billable rate should be used as it refers to the rate that billed for the amount of work done with respect to the project. It is to be charged upon the number of hours worked
Therefore in the given situation, the correct option is third i.e. billable rates and the same is to be considered