Pls HELP! ASAP! 50 points

You are a volcano scientist investigating an eruption. You observe a violent eruption coming from a large volcano with sharp peaks. The eruption has released incredibly hot, fast-moving lava with gas and tephra shooting out as high as 50 kilometers. The people in the area want to know why this has happened.
A. What type of volcano is this? (5 points)
B. Is the magma in this volcano viscous or not very viscous? (5 points)
C. What type of eruption is happening with this volcano? (5 points)