An advisor was given a set of statements for a discussion group of prospective parents who were thinking about using in vitro fertilisation (IVF) to begin a family. Which of the following statements about IVF are correct? 1. IVF is accessible to everyone. 2. IVF is $100\%$ successful, so it always results in pregnancy. 3. IVF gives single parents the chance to have a family. 4. IVF is not costly and can be afforded by everyone. 5. Sperm or egg donation may be used, which means the couple are not always the biological parents.
- A1, 3 and 4
- B1, 2 and 4
- C2 and 5
- D3 and 5