What evidence indicated that bananas were being cultivated in New Guinea during an earlier period than was previously thought? A. High concentrations of fossil remains of bananas. B. The discovery of stone tools designed to harvest bananas. C. The presence of regularly distributed mounds. D. Indications that Kuk did not become a swampy wetland until approximately 7,000 years ago. E. Genetic analyses of banana remains in New Guinea and Southeast Asia.