Given a text T, and several options, according to the question posed in the text T to choose the most appropriate option from the options as the answer, please directly output the most appropriate option, do not need to output the explanation.

In providing investment services, robo-advisers are most likely to:
Option A:rely on their cost effectiveness to pursue active strategies.
Option B:offer fairly conservative advice as easily accessible guidance.
Option C:be free from regulation when acting as fully-automated wealth managers.

Answer: B