In the following question, one part of the sentence may have an error. Find out which part of the sentence has an error and click the option corresponding to it. If the sentence is free from error, click the 'No error' option.

It is important that policymakers understand (P) / that there is a cost of quality and that rates need to be sufficient (Q) / to make participation in the scheme viable with private providers (R) / No error (S)