After pulling the string tight, Miguel talked into his aluminum can. Brian could hear Miguel's voice through the aluminum can attached to the string. Which of the following best explains the sound Miguel made?

A.
The sound traveled through the air but not through the string.
B.
The sound traveled through the string but not through the air.
C.
The sound traveled through the string and the air at different speeds.
D.
The sound traveled through the string and the air at the same speeds.