Here's a problem to solve: Data in tables may also be presented in graphs. Which type of data would best be displayed on a circle graph?

Among the 4 following options, which is the correct answer?

- A: the distance of the planets from the sun
 
- B: the depths of the major oceans on Earth
 
- C: the amount of rainfall each day for a month
 
- D: the percent of various materials in solid waste
 