What happens to an iron bar when it is placed within the coils of a solenoid

When the iron bar is placed within the coils of a solenoid it then becomes a magnet.  

Answer;

it becomes a magnet.

Explanation;When an iron bar is placed within the coils of a solenoid it becomes a magnet. This type of a magnet is called an electromagnet.An electromagnet is made by placing a ferromagnetic material such as iron in a solenoid of a closed circuit. Electromagnets are used in all kinds of electric devices including hard disk drives, generators, motors, etc.

It should be d if not then c