Which of the following compounds will not give the iodoform test with alkali and iodine?

In the following reaction,'$A$' is

Identify the set in which $X$ and $Y$ are correctly matched for the reaction of benzaldehyde with a reagent $X$ to form product $Y$.

The product $(B)$ in the above reaction is:

$Ph_2CH-C(=O)H \xrightarrow{\text{aqueous acid}} (A) (81\%) + \text{enol} (2\%) + \text{aldehyde} (17\%)$. Product $(A)$ of the above reaction will be:

What products are formed on the reaction of $Propanal$ with $2-Methylpropanal$ in the presence of $NaOH$? Write the name of the reaction.