Which active form means “you men will not do”?

Negating the Imperfect with Lan and Lam: Subjunctive, Jussive and Full Paradigms

• لَمْ تَفْعَلُوا
• لَنْ يَفْعَلُوا
• لَنْ تَفْعَلُونَ
• لَنْ تَفْعَلُوا