Which ancient four-day festival, celebrated mainly in Bihar, Jharkhand, and eastern Uttar Pradesh, involves devotees offering prayers to the setting and rising sun while standing in water?

• A Chhath Puja ✓
• B Makar Sankranti
• C Karva Chauth
• D Teej

Chhath Puja is dedicated to Surya, the Sun God, and Chhathi Maiya, with devotees fasting and offering arghya at riverbanks during sunrise and sunset.