Variety of products are obtained when dicarboxylic acids are heated. The nature of product depends on the carbon chain length seperating the two carboxylic groups.
(I) 1 ,2 and 1,3-dibasic acids on heating give monocarboxylic acid
(II) 1,4 and 1,5-dibasic acids on heating give cyclic anhydride
(III) 1,6 and 1,7-dibasic acids give cyclic ketones.
Indicate whether the following reactions are right or wrong.

Answer

a