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Audrey can use her laptop in energy-saving battery mode for seven hours. In regular battery mode, her laptop can be used for five hours. Audrey used her laptop for three hours in energy-saving battery mode. How many more hours can she use it in regular battery mode?$\newline$(A) $2$ and $1 / 7$ hours$\newline$(B) $2$ and $4 / 5$ hours$\newline$(C) $2$ and $6 / 7$ hours$\newline$(D) $4$ and $1 / 5$ hours