Four 0.050 M aqueous solutions, each containing a different solute, are tested for conductivity at 25 °C. The measured conductivities are listed.
Sample A: ≈0 mS cm⁻¹
Sample B: 2.4 mS cm⁻¹
Sample C: 7.9 mS cm⁻¹
Sample D: 11.6 mS cm⁻¹
The four possible solutes are:
1. CH₃OH
2. HF
3. NaCl
4. CaCl₂
Which option correctly matches each sample with its most likely solute?
a) A-1, B-3, C-2, D-4
b) A-1, B-2, C-4, D-3
c) A-1, B-2, C-3, D-4
d) A-2, B-1, C-3, D-4