JEE Main 2020 Chemistry question

For the following reactions \mathrm{CH_3CH_2CH_2Br + Z^{\ominus}} \xrightarrow{k_s\ (substitution)} \mathrm{CH_3CH_2CH_2Z + Br^{\ominus}} \mathrm{CH_3CH_2CH_2Br + Z^{\ominus}} \xrightarrow{k_e\ (elimination)} \mathrm{CH_3CH{=}CH_2 + HZ + Br^{\ominus}} where, (A) or (B), and , are, respectively, the rate constants for substitution and elimination, and , the correct option is .

• (A) and
• (B) and
• (C) and Correct
• (D) and