Which of the below statements is equivalent to $sum+= $sum ?

1.	Which of the below statements is equivalent to $sum+= $sum ?
A.	$sum= $sum+$sum
B.	$sum= $sum
C.	$sum= $sum+ $sum+ 1
D.	$sum= $sum+ 1
E.	None of these
Answer» B. $sum= $sum

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Which of the below statements is equivalent to $sum+= $sum ?

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