Solvents are classified as polar and nonpolar based on their dipole moments. Given below are some solvents.
(p) 1,2-dibromobenzene (q) diisopropylether (r) trans-1,2-dichloroethene
(s) 1,2-dichloroethane (t) N-ethyl-N-methylpropan-1-amine
The set in which all solvents are polar is

A

p, s, t

B

p, q, r

C

r, s, t

D

q, r, t