单项选择题
Given the following directory structure：
And the following command line invocation：
javac –d classes source/Utils.java
Assume the current directory is bigProject， what it the result？（）
A.If the compile is successful， Utils.class is added to the source directory.
B.The compiler returns an invalid flag error.
C.If the compile is successful， Utils.class is added to the classes directory.
D.If the compile is successful， Utils.class is added to the bigProject directory.
