LCF HCM Actual Question in CAT 2023 Slot - 2

Q. For any natural numbers m, n, and k, such that k divides both m + 2n and 3m + 4n, k must be a common divisor of

1. 2m and n
2. 2m and 3n
3. m and 2n
4. m and n

EXPLANATION

Ans 3