The correct order of increasing covalent character of the following is:

Options

A. `SiCl_(4) lt AlCl_(3) lt CaCl_(2) lt KCl`
B. `KCl lt CaCl_(2) lt AlCl_(3) lt SiCl_(4)`
C. `AlCl_(3) lt CaCl_(2) lt KCl lt SiCl_(4)`
D. None of these

Answer

B