Which of the following statements is/are correct ? In AK-47 Rifle, we use 7.62 mm ammunition INSAS Rifles use ammunition of 5.56 mm INSAS Rifle is shorter than AK-47 Rifle AK-47 Rifle is heavier than INSAS Rifle Select the correct answer using the code given below:

Statement 1: The AK-47 rifle primarily uses 7.62x39mm ammunition. This statement is correct. Statement 2: The INSAS (Indian Small Arms System) rifle uses 5.56x45mm NATO ammunition. This statement is correct. Statement 3: The INSAS rifle (typically around 960mm) is generally longer than the standard fixed-stock AK-47 rifle (around 870mm). Therefore, this statement is incorrect. Statement 4: The original milled-receiver AK-47 (~4.3 kg) is slightly heavier than the INSAS rifle (~4.15 kg with empty magazine). However, the more common stamped-receiver AKM (~3.1 kg) is significantly lighter than the INSAS. Without specifying the variant, the statement "AK-47 Rifle is heavier than INSAS Rifle" is not universally true and thus considered incorrect in this context, especially compared to common variants like the AKM. Given that statements 1 and 2 are definitively correct, and option B combines them, it implies that statements 3 and 4 are considered incorrect.