Which is the final product obtained by the reaction of Grignard reagent ethyl magnesium bromide with propanone?

What is the product formed when ethylene oxide is treated with a Grignard reagent?

Given below are two statements:
Statement $(I)$: The boiling points of alcohols and phenols increase with an increase in the number of $C$ atoms.
Statement $(II)$: The boiling points of alcohols and phenols are higher in comparison to other classes of compounds such as ethers and haloalkanes.
In the light of the above statements,choose the correct answer from the options given below:

In the following reaction sequence,$X$ and $Y$,respectively,are:
$CH_2=C(CH_3)_2$ $\xrightarrow{X} \text{Epoxide}$ $\xrightarrow{Y} (CH_3)_3C-OH$

Which of the following compounds will give a positive iodoform test?

Glycerol $\xrightarrow{KHSO_4} A$ $\xrightarrow{LiAlH_4} B$
$A$ and $B$ are :