JEE Main 2023 Chemistry question on Solutions

The number of pairs of the solutions having the same value of the osmotic pressure from the following is ________.

(Assume 100% ionization)

A. 0.500 M $\text{C}_2\text{H}_5\text{OH}$ (aq) and 0.25 M KBr (aq)
B. 0.100 M $\text{K}_4[\text{Fe}(\text{CN})_6]$ (aq) and 0.100 M $\text{FeSO}_4(\text{NH}_4)_2\text{SO}_4$ (aq)
C. 0.05 M $\text{K}_3[\text{Fe}(\text{CN})_6]$ (aq) and 0.25 M $\text{NaCl}$ (aq)
D. 0.15 M NaCl (aq) and 0.1 M $\text{BaCl}_2$ (aq)
E. 0.02 M $\text{KCl}\cdot\text{MgCl}_2\cdot 6\text{H}_2\text{O}$ (aq) and 0.05 M KCl (aq)