A Transformer Has 450 Turns in Its Primary Coil and 30

Multiple Choice

A transformer has 450 turns in its primary coil and 30 turns in its secondary coil.Which one of the following statements concerning this transformer is true?

A) This is a step-up transformer.
B) The turns ratio is 15 for this transformer.
C) The ratio of the voltages V_s / V_p is 15 for this transformer.
D) The ratio of the currents I_s / I_p is 0.067 for this transformer.
E) The power delivered to the secondary must be the same as that delivered to the primary.