Compound $A$ is

Identify product $B$ in the following reaction sequence:
$(CH_3)_2C=C(CH_3)_2$ $\xrightarrow{X_2, H_2O} A$ $\xrightarrow{OH^{-}} B$

Read the following statements carefully :
$(A)$ $A$ secondary alcohol on oxidation gives a ketone
$(B)$ Ethanol reacts with conc. $H_2SO_4$ at $180\,^{\circ}C$ to yield ethylene
$(C)$ Methanol reacts with iodine and sodium hydroxide to give a yellow precipitate of iodoform
$(D)$ Hydrogen gas is liberated when sodium is added to alcohol. Select the correct statements from the above set:

For the compounds:
$(A)$ $H_3C-CH_2-O-CH_2-CH_2-CH_3$
$(B)$ $H_3C-CH_2-CH_2-CH_2-CH_3$
$(C)$ $CH_3-CH_2-CO-CH_2-CH_3$
$(D)$ $H_3C-CH(OH)-CH_2-CH_2-CH_3$
The increasing order of boiling point is:
Choose the correct answer from the options given below:

Major product of the reaction is

The reaction of elemental sulphur with a Grignard reagent followed by acidification leads to the formation of: