Tryphinah Baloyi, an unmarried woman who is also not a partner in a civil union, recently gave birth to a son, Jonathan. Her boyfriend, Daniel Khumalo, is Jonathan's biological father. She and Daniel approach you for advice about how to register the birth. Answer the following questions:

(a) They wish to register their son as "Jonathan Baloyi-Khumalo". May they do so? Explain with reference to authority.