A Spaceship Departs from the Solar System (Event $A$ ) and Travels at a Constant Velocity to a Distant

Multiple Choice

A spaceship departs from the solar system (event $A$ ) and travels at a constant velocity to a distant star. It then returns at a constant velocity, finally returning to the solar system (event $B$ ) . A clock on the spaceship registers which of the following kinds of time between these events?

A) Proper time
B) Coordinate time
C) Space time interval
D) Proper time and space time interval
E) Coordinate time and space time interval
F) All three