The nurse is caring for a client with the sexually transmitted infection (STI) syphilis. The client reports having unprotected sex. Which response should the nurse provide?

A. While safe sex practices significantly reduce the risk of STIs, they do not eliminate it entirely; thus, this statement is misleading. B. Not all STIs are transmitted solely through sexual intercourse (e.g., some can be transmitted through non-sexual contact), making this statement too broad. C. Explaining that reinfections occur from sexual contact with untreated partners is accurate and emphasizes the importance of treatment for both the infected person and their partners. D. While some contraceptives may provide a barrier to STIs, not all methods are effective against infections, so this statement requires clarification.