What is the correct disagreement for a boy aged sixteen without signs?

Kitab al-Hajr: Signs of Puberty, Age Thresholds, and the Muraahiq’s Claim

• The disciples deem him pubescent; Abu Hanifah’s fallback age has not been met
• Both require eighteen
• Abu Hanifah deems him pubescent; the disciples do not
• Both immediately require release of property