HELP!! WHATS THE ANSWER??

If a program “Tester” is run from the command line as shown below, what is the value of args[0] in the function void main(String[] args)?
"java Tester sing a song"

a: "sing a song"
b: "sing"
c: "song"
d: "a "

NEED ANSWER ASAP!! WILL GIVE BRAINLIEST!