A \( \mathrm{H}_{2} \mathrm{SO}_{4} \)
B অনার্দ্র \( \mathrm{CaCl}_{2} \)
C \( \mathrm{KHSO}_{4} \)
D \( \mathrm{K}_{2} \mathrm{SO}_{4} \)
Correct Answer: Option C
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