On 14 October 2021, The Pakistan Army’s (PA’s) Air Defence forces have inducted into service a variant of the ____________________surface-to-air missile (SAM) system with capable range of 100Km?

A. Chinese-made HQ-9
B. Russian-made- S-400
C. US-made- Patriot
D. None of these.

Submitted by: Farjan Ahmed Soomro