The circuit diagram above contains four ammeters W, X, Y and Z, Which of the following statements about the ammeter readings is correct
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A.
The reading of W is equal to that of Y and twice that of X -
B.
The reading of Y is greater than that of Z -
C.
The readings of W and Y are equal and each is greater than that of X -
D.
The reading of Z is equal to the sum of the readings of Y and W