Ivana is studying insect life cycles. She placed a male and a female gnat inside a terrarium. The female gnat laid eggs. Ivana observed and recorded all of the stages she saw the eggs go through. Her results are shown in the table below. Stage Time in Stage egg 24 hours larva 7 days pupa 6 days adult 2 weeks Which of the following is a valid conclusion that Ivana can draw from her data? A. A gnat life cycle has more than five stages. B. A gnat generally does not live for more than 1 week. C. A gnat completes its life cycle in about 1 month. D. A gnat is a crustacean, not an insect.