(A) `CuCl_(2)` gives a deep blue coloured solution with ethylamine.
(R) Ethylamine molecules co-ordinate with cupric ions forming a blue coloured complex.
A. If both A and R are correct and R is the correct explanation of A.
B. If both A and R are correct and R is not the correct explanation of A.
C. If A is the correct but R is incorect.
D. If A is the incorrect but R is corect.
