what will produce the following javascript code fragments script var posnum..., Operators, Javascript

Question:What will produce the following javascript code fragments:<script>
var posNum=30;
var negNum=-posNum
var outcome=Math.abs(negNum);
document.write(outcome);
</script>

A 30 
B -30 
C true 
D syntax error

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Question:What will produce the following javascript code fragments:<script> var posNum=30; var negNum=-posNum var outcome=Math.abs(negNum); document.write(outcome); </script>

A 30

B -30

C true

D syntax error

A

Question:What will produce the following javascript code fragments:
<script> var posNum=30; var negNum=-posNum var outcome=Math.abs(negNum); document.write(outcome); </script>