The correct option "Only two" is based on the analysis of the statements regarding stupas in ancient India. Statement 1 is correct as the stupa has its roots in the Buddhist tradition, serving as a significant architectural form in Buddhism. Statement 2 is also true since stupas were indeed repositories of relics, often containing remains of the Buddha or other significant figures. However, while Statement 3 may imply that stupas exclusively serve as votive and commemorative structures, it is more accurate to say they are primarily associated with relics and spiritual significance rather than a purely votive function. Thus, two statements correctly represent the essence of stupas in ancient India while the third is somewhat misleading, leading to the conclusion that only two statements are entirely correct.