Which of the following reactions will not result in the formation of carbon-carbon bonds?

Two compounds $A$ and $B$ with the same molecular formula $(C_{3}H_{6}O)$ undergo Grignard's reaction with methylmagnesium bromide to give products $C$ and $D$. Products $C$ and $D$ show the following chemical tests.

Test	$C$	$D$
Ceric ammonium nitrate Test	Positive	Positive
Lucas Test	Turbidity obtained after five minutes	Turbidity obtained immediately
Iodoform Test	Positive	Negative

$C$ and $D$ respectively are:

Which of the following compounds does not undergo aldol condensation?

An organic compound $A$ has the molecular formula $C_3H_6O$ and it undergoes the iodoform test. When saturated with dilute $HCl$,it gives $B$ with the molecular formula $C_9H_{14}O$. $A$ and $B$ respectively are:

The major product of the following reaction is:

The light yellow compound produced when acetone reacts with iodine and alkali is: