Help with a transformer question

[nametaken]

Ok, I'm new to this website and I'm slightly confused as to what the correct answer would be to the question. I'm not brilliant at physics, so I have no idea why I took it at higher level besides my admiration for the subject.

Here is the question:

A transformer cannot be used to run a 230 V, 100W mains lamp directly from a 12 V car battery. Which one of the following is the correct reason for this?

a) The internal resistance of the battery will not allow enough current in the primary coil.

b) Any currents in the iron core will heat up the iron core.

c) The current from the battery will produce a steady flux in the secondary coil.

Can you please help me understand the correct answer?

[genepeer]

C. Transformers need alternating current that will produce a changing flux in the secondary coil which will in turn induce a current in it. The AC in the primary coil makes the primary coil act like a magnet being moved back and forth close to the secondary coil. A car battery produces direct current.