I'm pretty sure the answer is b
Answer:
try counting how many numbers there are to get to 5 which would be 4 then count how many numbers there to get 10 which is 5 and so on
I'm not sure but maybe one of the two websites can help you
.
http://wiki.netbeans.org/MusicAppUsingRESTRemoting
https://mukeshscience.wordpress.com/2014/05/26/adding-audio-to-java/
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