Task: Reasoning / MCQA
User instruction:
Which of the following is TRUE in a step-down transformer? Explain your answer.
A. The current fin the secondary coil is less than that in the primary coil.
B. The number of loops in the secondary coil is less than that in the primary coil
C. The number of loops in the secondary coil is greater than that in the primary coil
D. The voltage in the secondary coil is greater than that in the primary coil.

Evaluation criteria:
The answer is B.
An explanation for the answer must be provided.