Why did pyrrhus attacked rome in 282 b. c

The Greek and Roman Empire Timeline in the Battle of Heraclea took place in 280 BC between the Romans under the command of consul Publius Valerius Laevinus, and the combined forces of Greeks from Epirus, Tarentum, Thurii, Metapontum, and Heraclea under the command of Pyrrhus king of Epirus.

https://en.wikipedia.org/wiki/Pyrrhic_War

the correct answer is:

b) a rich merchant.