The Massachusetts Constitution, Though Amended, Is the Only Constitution of the Original

The Massachusetts constitution, though amended, is the only constitution of the original thirteen states that still exists because

A) Massachusetts is a very politically active state.
B) complicated procedures are required before it can be replaced.
C) the drafter, John Adams, grounded the document in extensive research of governments that took him all the way back to the ancients.
D) Massachusetts is unwilling to adjust to new ways.