Choose the correct answer

Which statement best describes the weak-letter change in this lesson?

Attached Trilateral (Mujarrad) - Bab 7: Fa'laah & Weak Root Rules

• قَلْسَيَ changes to قَلْسَىٰ because final Ya is vowelled and preceded by Fathah
• The final Ya changes to Waw
• The final weak letter is always retained
• The change occurs because the verb is passive