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A thin copper wire of length \( l \) increases in length by \( 1 \% \) when heated from \( 0^{\circ} \mathrm{C} \) to \( 100^{\circ} \mathrm{C} \). If a thin copper plate of area \( 2 l \times l \) is heated from \( 0^{\circ} \mathrm{C} \) to \( 100^{\circ} \mathrm{C} \), the percentage increase in its area will be :
(A) \( 1 \% \)
(B) \( 2 \% \)
(C) \( 3 \% \)
(D) \( 4 \% \)
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