What could the statement debugger in the following JavaScript code be doing? function f(o) { if (o === undefined) debugger; }

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Q: What could the statement debugger in the following JavaScript code be doing?

function f(o) 
{
     if (o === undefined) debugger;
}

A It does nothing but a simple breakpoint
B It debugs the error in that statement and restarts the statement's execution
C It is used as a keyword that debugs the entire program at once
D It is used to find error in the statement
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Q: What could the statement debugger in the following JavaScript code be doing? function f(o) { if (o === undefined) debugger; }

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Q: What could the statement debugger in the following JavaScript code be doing?
function f(o) { if (o === undefined) debugger; }