Answer
Use more of both
Work Step by Step
This is an easy question. Look for values where the MRPl and MRPc outweigh the costs. In this situation both do so use more.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.