The correct answer is: Both (A) and (R) are true, but (R) is not the correct explanation of (A).
Jamyang Namgyal was the 10th and most famous king of the Namgyal dynasty in Ladakh. He was born in 1554 and ruled from 1580 to 1616. He is known for his military prowess and for resisting several Muslim invasions of Ladakh. He was also a patron of the arts and literature.
The reason given for why Jamyang Namgyal was nicknamed the Lion is that he resisted several Muslim invasions. However, this is not the only reason why he was given this nickname. He was also known for his courage, strength, and determination. He was a fierce warrior and a skilled diplomat. He was also a devout Buddhist and a wise ruler.
Therefore, both (A) and (R) are true. However, (R) is not the correct explanation of (A). Jamyang Namgyal was nicknamed the Lion for a number of reasons, not just because he resisted Muslim invasions.