What is the concentration of a solution which contains 0.28g of potassium hydroxide in 100 cm\(^{3}\) of solution [KOH = 56]

A. 0.01 mol dm\(^{-3}\)
B. 0.05 mol dm\(^{-3}\)  
C. 0.10 mol dm\(^{-3}\)
D. 0.50 mol dm\(^{-3}\)

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Correct Answer: B