$2M\underset{ether}{\overset{Na}{\to }}\underset{\left(hydrocarbon\right)}{N}\underset{\left(1eq\right)}{\overset{B{r}_2,h\upsilon }{\to }}Q$

$L\underset{2)Q}{\overset{1)NaOH}{\to }}R$

Select the correct statement.

X and R are metamers

X and R are chain isomers

One mole of ‘L’ on heating with fuming nitric acid in presence of excess silver nitrate in Carius tube gives one mole of AgBr

X and R are homologues