_________ या जोड-मूळ संख्या आहेत. A. (4, 9) B. (2, 3) C. (4, 6) D. (3, 5)

Twin primes are pairs of prime numbers that differ by 2, such as (3, 5), (5, 7) and (11, 13). (2, 3) differ by 1, and 4, 6 and 9 are not prime.