I need help understanding this question below:

A team member from R&D tells you that her work is too creative and to provide you with a fixed single estimate for the activity. You both decide to use the average labor hours per installation from past project to predict the future. This is an example of which of the following?

A) Parametric estimate
C) Analogous estimating

Ritas answer is "A" based on “average labour hours per installation”. BUT I believed its “C” based on “from past project to predict the future”