Fernando, CPA, started his own public accounting practice in 2019 when the company he had worked for since 2010 went bankrupt and he lost his job. During all the years Fernando worked for the company, he was only involved in the preparation of simple personal tax returns. Since he started his practice, Fernando has not yet had the time to take tax courses or seminars in addition to the courses required to register his practice, and he has not purchased any tax-related manuals or subscribed to any tax reporting service.One of his new clients, Sharon, has consulted him on a complex corporate tax matter involving a foreign affiliate. Sharon requires an answer in two days time.

What are the major ethical issues Fernando should consider?