Which ancient city is considered as “Pearl of Gandhara Civilization”?

Which ancient city is considered as "Pearl of Gandhara Civilization"?
A: Hasan Abdal
B: Taxila
C: Kamra
D: Wah

Taxila is regarded as the “Pearl of Gandhara Civilization.” It was an important cultural and educational center; flourishing with Buddhist monasteries and scholars. The ruins of Taxila remain a UNESCO World Heritage Site.