Which one of the following best describes how economy of scale relates to an insurer's operations? Available answer options Select only one option A By outsourcing common tasks to larger more efficient companies, an insurer increases its own profits. B By weighing all alternatives carefully, an insurer is able to undertake only those operations with the greatest chance of success. C As an insurer writes more policies, the average claim size per policy decreases and profits per policy increase. D As an insurer grows and writes more policies, it is able to reduce the average cost of producing those policies and thereby increase profits per policy