A, B, C are three substances. A does not conduct electricity in the soild, molten state and aqueous solution. B conducts electricity both in the fused and aqueous states, while C conducts electricity only in the aqueous state. In solid state neither B nor C conducts electricity. Which of the following statements is/are true regarding A, B and C ?
(A) A has polar covalent linkage
(B) A has nonpolar covalent linkage
(C) B is ionic in nature
(D) Cation formed by C is highy polarizing