Which statement best describes how scientists and engineers work together in the research and development cycle? A. Scientists test designs

Which statement best describes how scientists and engineers work together in the research and development cycle? A. Scientists test designs made by engineers and then use the results to improve the designs. B. Scientists develop a new technology, and then engineers test it by doing experiments. C. Engineers come up with scientific questions when they are developing their design, and scientists do research to answer them. O D. Engineers make a scientific discovery, and then scientists perform research to verify it. please help asap if you can​