A \( C H_{3} - C H = C H_{2} \)
B \( C H_{3} - C H - C H = C H_{2} \)
C \( C H_{3} - C H - C H = C H - C H_{3} \)
D \( C H_{3} - C H - C H = C H - C H_{3} \)
Correct Answer: Option A
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