Identify the product \([B]\) in the following reaction:

The correct answer is option 2.

This reaction occurs according to Markovnikov's rule which states that when an unsymmetrical alkene undergo hydrohalogenation, the negative part of the addendum (adding molecule) gets attached to that doubly bonded C which posses lesser number of hydrogen atoms.

By markovnikov's rule, the \(Cl^-\) gets adds to the carbon which has lesser number of hydrogen atom and forms a alkene.

Formed alkene reacts with HI molecule to undergo markovnikov's addition. Here, the carbocation formed is an tertiary carbocation which is more stable. Thus the major product is (2)