A \( \mathrm{C}_{\mathrm{n}} \mathrm{H}_{2 \mathrm{n}+2} \)
B \( \mathrm{C}_{\mathrm{n}} \mathrm{H}_{2 \mathrm{n}-2} \)
C \( \mathrm{C}_{n} \mathrm{H}_{2 n+1} \)
D \( \mathrm{C}_{\mathrm{n}} \mathrm{H}_{2 \mathrm{n}} \)
Correct Answer: Option B
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