How do you normally stop on «تَوَّابًا»?

Al-Kāfirūn and An-Naṣr: Applied Madd, Idghām, Ghunnah and Waqf

• Tawwāban with full tanwīn
• Tawwābu with ḍammah
• Tawwāb with no ʿiwaḍ
• Tawwābā with madd ʿiwaḍ