Option a is the correct answer. The Nastaliq is a Perso-Arabic script used as the preferred style for a variety of languages, Dari and Pashto in Afghanistan, and Persian in Iran. Nastaliq's popularity extends to South Asia where the calligraphic hand is utilized by the Urdu and Kashmiri languages in India and Pakistan. Through its usage in various languages over the centuries, the Nastaliq script has developed an exclusive relationship with the Punjabi and Urdu languages.