NEET 2022 Chemistry question

Compound X on reaction with O followed by Zn/HO gives formaldehyde and 2-methyl propanal as products. The compound X is :

• (A)Pent-2-ene
• (B)3-Methylbut-1-eneCorrect
• (C)2-Methylbut-1-ene
• (D)2-Methylbut-2-ene