Correct Option: A

Mount Sinabung, a stratovolcano, located in North Sumatra, Indonesia, erupted in May 2016. Seven persons were killed in the wake of its eruption. The 2,460metre (8,070 foot) tall volcano is one of 129 active volcanoes in Indonesia, which sits on the Pacific Ring of Fire, a belt of seismic activity running around the basin of the Pacific Ocean.