Which type of volcano has a shallow magma chamber?

Which type of Volcano can erupt for 100s of years?

Which type of volcano has explosive eruptions?

Which type of volcano has a steep crater?

Which type of volcano has a central vent?

A. cinder cone volcano

B. Composite cone volcano

C. Shield volcano


((I know it looks like a lot, but I can't find it in my science book anywhere and I'm confused))