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? <image 1>
['Markovnikov orientation.', 'Non-Markovnikov orientation.', 'Non of the above.']