For example you will have to use chlorine a strong ...

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For example you will have to use chlorine a strong disinfectant in the pool to keep it clean.

A. For example you will have to use chlorine a strong disinfectant in the pool to keep it clean.
B. For example, you will have to use chlorine, a strong disinfectant, in the pool to keep it clean.
C. For example you will have to use chlorine, a strong disinfectant, in the pool to keep it clean.
D. For example, you will have to use chloring, a strong disinfectant, in the pool, to keep it clean.

Select your answer:

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