A silicon specimen is made into a \( P \)-type semiconductor by doping, on an average, one Indiu...

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A silicon specimen is made into a \( P \)-type semiconductor by doping, on an average, one Indium atom per \( 5 \times 10^{7} \) silicon atoms. If the number density of atoms in the silicon specimen is \( 5 \times 10^{28} \) atoms \( / \mathrm{m}^{3} \), then the number of acceptor atoms in silicon per cubic centimetre will be
(A) \( 2.5 \times 10^{30} \) atoms \( / \mathrm{cm}^{3} \)
(B) \( 1.0 \times 10^{13} \) atoms \( / \mathrm{cm}^{3} \)
(C) \( 1.0 \times 10^{15} \) atoms \( / \mathrm{cm}^{3} \)
(D) \( 2.5 \times 10^{36} \) atoms \( / \mathrm{cm}^{3} \)
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