Which of the following compounds will give a yellow precipitate with iodine and alkali?

This is the Iodoform Test. Compounds containing the ${\text{CH}}_3\text{CO}-$ group (methyl ketones) or ${\text{CH}}_3\text{CH(OH)}-$ group react with ${\text{I}}_2/\text{NaOH}$ to form a yellow precipitate of Iodoform (${\text{CHI}}_3$).$2$ -Hydroxypropane: ${\text{CH}}_3{\text{CH(OH)CH}}_3$ (contains ${\text{CH}}_3\text{CH(OH)}-$) $⟹$ Positive.Acetophenone: ${\text{C}}_6{\text{H}}_5{\text{COCH}}_3$ (contains ${\text{CH}}_3\text{CO}-$) $⟹$ Positive.(Note: Both A and B are correct in chemistry; standard 2012 solutions focus on Acetophenone as the classic carbonyl example).