A student wanted to know the most effective way to grow bacteria in a lab. He conducted a descriptive investigation instead of an experimental investigation. What is a limitation of his investigation? O A descriptive investigation cannot show a cause-and-effect relationship between bacteria growth and possible factors affecting growth. O A descriptive investigation is always more expensive than an experimental investigation. aner O A descriptive investigation usually does not involve much data collection to support a hypothesis. O A descriptive investigation provides little prior knowledge or background information about bacteria growth.​