In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one, which best express the same sentence in Indirect/Direct speech.
The professor told the class, "Ice floats on water".

A

The professor told the class that, that ice floats on water.

B

The professor told the class ice floats on water.

C

The professor told the class that ice floats on water.

D

The professor told the class how ice floats on water.