Final answer:
MRPC 1.8(b) states that the information disadvantaging the client refers to the use of confidential information that leads to the client's financial disadvantage. If the lawyer uses such information and profits from it at the expense of the client, any profits made may be disgorged. Otherwise, if the information use does not financially disadvantage the client, it is allowed.
Step-by-step explanation:
According to MRPC 1.8(b), the information that disadvantages the lawyer's client refers to the use of confidential information that leads to the client's financial disadvantage, either by the lawyer or a third party. For example, if the lawyer uses information about the client's financial situation to make investments or engage in business activities that result in profits for the lawyer but cause financial harm to the client, it would be a violation of the disciplinary rule. In such cases, any profits made by the lawyer can be disgorged, which means they may have to be returned. However, if the information use does not financially disadvantage the client, it is permitted under the rule.