Here's a problem to solve: Michael claims he can use the bands on a woolly caterpillar to predict winter. He says long black bands mean a hard winter, and short black bands mean a mild winter. Last week he found three woolly caterpillars with long black bands. Which of the following do his observations show?

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

- A: Evidence that his claim is correct
 
- B: Evidence that his claim is wrong
 
- C: Proof that there is going to be a hard winter
 
- D: Neither proof nor disproof for his claim
 