Which of the following would be an appropriate hypothesis for this lab?

A. If a planet is closer to the sun, then it will have a shorter orbital speed (the time it takes to go around the sun) than planets farther out because it is closer and has less distance to travel.
B. Planets that are closer to the sun will take longer to travel around the sun and therefore have a longer orbital speed due to immense gravitational attraction of the sun
C. How does the distance a planet is from the sun affect its orbital speed?
D. The distance that a planet is from the sun does not affect its orbital speed. All planets travel the same speed around the sun.

A. If a planet is closer to the sun, then it will have a shorter orbital speed (the time it takes to go around the sun) than planets farther out because it is closer and has less distance to travel.