Explanation

– Pair 1 is correctly matched: The Bandarpunch Glacier located in the Garhwal Himalayas (Uttarakhand) feeds the headwaters of the Yamuna River.
– Pair 2 is correctly matched: The Bara Shigri Glacier in the Lahaul-Spiti district of Himachal Pradesh feeds the Chandra River, which merges with the Bhaga to form the Chenab River.
– Pair 3 is incorrectly matched: The Milam Glacier in the Kumaon Himalayas is the source of the Gori Ganga River (a tributary of the Kali/Sharda). The Mandakini River originates from the Chorabari Glacier near Kedarnath.
– Pair 4 is correctly matched: Meltwater from the snout of the Siachen Glacier forms the Nubra River, which flows south to join the Shyok River in Ladakh.
– Pair 5 is incorrectly matched: The Zemu Glacier in Sikkim (beneath Mount Kangchenjunga) is the source of the Teesta River, not the Manas River (which originates in Tibet and flows through Bhutan).

Hence, pairs 1, 2, and 4 are correctly matched — Option A.