Identify correct statement regarding heavy water
(a)It can be prepared by exhaustive electrolysis of water.
(b) Boiling point of heavy water is more than `H_2O`.
(c)Viscosity of water is greater than heavy water.
(d)Chemical reaction of heavy water are faster than those of water.

Options

A. a,b,c,d
B. a,b
C. a,d
D. only b