Select the false statement.

a) Purines and pyrimidines are bound to phosphate groups covalently crating a helix structured DNA.

b) The electron delocalization along atoms provides partial double bond character to the bases of pyrimidines which results in planar structures..

c) Phosphodiester bonds con be found in the backbone of RNA molecules

d) Phosphodiester bonds can be hydrolyzed under alkaline conditions.