Carol wanted to know about how much time students in her school spent surfing the Internet. So she asked 15 of her friends to complete a survey that she had prepared. Will the results of Carol’s survey represent the population of students in her school as a whole, and if so, which sampling method did Carol use? A. Yes, Carol used simple random sampling. B. Yes, Carol used systematic random sampling. C. Yes, Carol used stratified random sampling. D. No, Carol’s survey was not a random sample.