A solicitor has an interest in another business which is an estate agency. The solicitor is dealing with the administration of an estate for a client and Intends to refer the executors to the solicitor's estate agency to market the deceased's property. The solicitor believes that this particular estate agency is Ideally suited to handle this.Do the rules of professional conduct allow the solicitor to refer the client to the solicitor's estate agency?
选项：

A:No, because this would demonstrate a lack of integrity.
B:No, because to do so would be taking unfair advantage of the clients.
C:Yes, the solicitor is permitted to refer the clients' matter to a separate business and does not need the clients' consent to do so.
D:Yes, provided the solicitor tells the clients about their interest in the separate business and the clients give informed consent.
E:No, because this would create a conflict of interest.