Which One of the Following Statements Concerning Transformers Is False

Multiple Choice

Which one of the following statements concerning transformers is false?

A) Their operation makes use of mutual induction.
B) They are an application of Faraday's and Lenz's laws.
C) A transformer can function with either an ac current or a steady dc current.
D) A transformer that steps down the voltage,steps up the current.
E) A transformer that steps up the voltage,steps down the current.