Which past/present/future sequence is accurate after mid-day conversion?

Kitab al-Sawm: Interrupted Voluntary Worship, Puberty and Conversion

• Past make-up, present expiation, no future fasting
• No past make-up, abstention now, obligatory fasting subsequently
• No past make-up and no fasting now or later
• Past fidyah, voluntary fasting now, only make-up later