Choose the best answer for each question:Câu hỏiWhat is the main purpose of the sieve of Eratosthenes? A. The method is to find all the prime numbers less than or equal to a given natural number. B. The method is to find all the prime numbers greater than a given natural number. C. The method is to find all the odd and even numbers less than a given natural number. D. The method is to find all the odd and even numbers greater than a given natural number.