Question: When an unsymmetrical alkene such as propene is treated with N-bromosuccinimide in aqueous dimethyl sulfoxide, the major product has the bromine atom bonded to the less highly substituted carbon atom. Is the following one Markovnikov or non-Markovnikov orientation?  A) Markovnikov orientation  B) Non-Markovnikov orientation  C) Non of the above  D) Not exists. Please choose an answer from [A, B, C, D].
Answer: A