The three thermal power stations in Bihar run on coal are

Chandrapur, Panchet, Barauni
Bokaro, Panchet, Chandrapur
Barauni, Chandrapur, Santaldih
Bokaro, Chandrapur, Santaldih

The correct answer is: B. Bokaro, Panchet, Chandrapur

Bokaro Thermal Power Station is a coal-fired thermal power station located in Bokaro district, Jharkhand, India. It is one of the largest thermal power stations in India with an installed capacity of 2,400 MW. The power station is owned and operated by NTPC Limited.

Panchet Thermal Power Station is a coal-fired thermal power station located in Dhanbad district, Jharkhand, India. It is one of the oldest thermal power stations in India with an installed capacity of 1,000 MW. The power station is owned and operated by Damodar Valley Corporation.

Chandrapur Thermal Power Station is a coal-fired thermal power station located in Chandrapur district, Maharashtra, India. It is one of the largest thermal power stations in India with an installed capacity of 2,640 MW. The power station is owned and operated by NTPC Limited.

The other options are incorrect because they do not include all three of the thermal power stations in Bihar that run on coal.