Which Indo-Greek ruler's envoy Heliodorus installed a pillar in Vidisha and was a devotee of Lord Krishna?

Correct option is C

The correct answer is (c) Antialkidas
Explanation:
• Heliodorus was envoy of Indo-Greek king Antialkidas.
• Pillar erected at Vidisha in 2nd century BCE.
• Inscription refers to Bhagavata (Krishna) worship.
• Evidence of early Vaishnavism in India.
Information Booster:
• Heliodorus Pillar is key archaeological source.
• Shows Indo-Greek cultural and religious interaction.
Additional Knowledge (Incorrect Options):
(a) Demetrius
• Known for Indo-Greek expansion.
• No link with Heliodorus Pillar.
(b) Menander
• Associated with Buddhism (Milinda Panha).
• Not related to Vidisha pillar.
(d) Diodotus
• Greco-Bactrian ruler.
• Chronologically and geographically unrelated.