Indo-Bhutan Border is guarded by which one among the following forces

Indo-Bhutan Border is guarded by which one among the following forces ?

Border Security Force (BSF)
Indo-Tibetan Border Police (ITBP)
Assam Rifles
Sashastra Seema Bal (SSB)
This question was previously asked in
UPSC CISF-AC-EXE – 2023
Different paramilitary forces in India are assigned specific borders to guard. The Indo-Bhutan border is primarily guarded by the Sashastra Seema Bal (SSB).
– SSB (Sashastra Seema Bal) guards the India–Nepal and India–Bhutan borders.
– BSF (Border Security Force) guards the India–Pakistan and India–Bangladesh borders.
– ITBP (Indo-Tibetan Border Police) guards the India–China border (along with sections guarded by Assam Rifles).
– Assam Rifles guards the India–Myanmar border and parts of the India–China border in the North-East.
SSB was formed in 1963 and is one of India’s Central Armed Police Forces (CAPF). Its role on the Indo-Bhutan border includes preventing cross-border crimes, smuggling, and illegal infiltration, while also fostering friendly relations with the border population.