Siachen Glacier, one of the world’s longest mountain glaciers, lying in the Karakoram Range system of Kashmir. It is the source for Nubra River, says Majid page 16.23 and Encyclopedia Britannica. #4 is right, this eliminates C and D.
In both A and B, #1 is common so we’ve to accept Bandarpunch: Yamuna as correct. Now everything boils down to #2 and #3, but their glaciar origin names not given in Majid.
River Mandakini actually originates from the springs fed by melting snow of Charabari glacier about one km above Kedarnath temple. Says Rudraprayag district website. Whereas, The Sarda or Saryu river rises in the Milam glacier in the Nepal Himalayas says NCERT Class11 India: Physical page 26 . So, #3 is wrong, we are left with answer A.
Just to cross check, Bara Shigri is the largest glacier located in Lahaul Spiti region in Chandra Valley, Himachal Pradesh. It is a 30-km long glacier, the second longest glacier in the Himalayas after Gangotri. It flows northwards and feeds the Chenab river.