Identify whether the given statements about ionisation energy are correct or incorrect.
Statement A: The ionisation energy of an atom is the amount of energy that is required to remove an electron from a mole of atoms in the gas phase.
Statement B: The ionisation energy increases from top to bottom in groups and
decreases from left to right across a period.

A

Both Statements A and B are correct

B

Only Statement A is correct

C

Both Statements A and B are incorrect

D

Only Statement B is correct