Choose the correct answer

Why are passive forms not listed in this Sarf-e-Sagheer?

Trilateral Bare Regular - Bab 5: Karuma Yakrumu & Intransitive Verbs

• Because this taught paradigm treats كَرُمَ as intransitive
• Because the root has a throat letter
• Because the verb is quadrilateral
• Because the Masdar is missing