JEE Main 2021 Chemistry question

The major product (A) formed in the reaction given below is : \mathrm{PhCH(CH_3)CH_2Br+CH_3O^-\xrightarrow{CH_3OH}A} (Major product)

• (A)CH3-CH2-CH(Ph)-CH2Br (unreacted)
• (B)PhCH=CH-CH3 (elimination product)Correct
• (C)CH3-CH2-CH(Ph)-CH2OH
• (D)CH3-CH2-CH(Ph)-CH2OCH3