Which one of the following groups of animals belongs to the category of endangered species?

To determine which group belongs to the category of endangered species, we need to assess the conservation status of the animals listed in each option (referencing IUCN status around 2012 or generally high-risk categories like Critically Endangered (CR) and Endangered (EN)). 1. Option (A): Great Indian Bustard (CR), Musk Deer (EN - some species), Red Panda (EN), Asiatic Wild Ass (Near Threatened - NT, was EN earlier). This group consists predominantly of species listed as Critically Endangered or Endangered. 2. Option (B): Kashmir Stag (CR), Cheetal (Least Concern - LC), Blue Bull (LC), Great Indian Bustard (CR). This group includes species of Least Concern. 3. Option (C): Snow Leopard (Vulnerable - VU, previously EN), Swamp Deer (VU, some subspecies EN), Rhesus Monkey (LC), Saras Crane (VU). This group includes species of Least Concern and Vulnerable status. 4. Option (D): Lion-tailed Macaque (EN), Blue Bull (LC), Hanuman Langur (LC - species vary), Cheetal (LC). This group includes multiple species of Least Concern. Based on the concentration of highly threatened species (CR and EN), Option (A) is the most appropriate choice representing a group of animals belonging to the category of endangered species.