[单选题]
The primary of a transformer has 100 turns and its secon d-h+1f,dxywdx5fx:re)v u 9y dary has 200 tw- y +-r+a6ro6m kztzaurns. If the input voltage to the primary is 100 V, we can expect the output voltage of the semo k awza-t y-rr6z++6condary to be
A. 50 V.
B. 100 V.
C. 200 V.
D. none of the given answers
