take a look at HSC 2001 and 2002 and any other trial papers and note that all modules and the AOS when refering to a text of your own choosing
they add a s in the word "text" so texts, they dont make it so blatantly obvious, but the added plural does suggest more than one, and they sometimes say "At least ONE texts of your own choosing", so when they say at least one it means, two, i'm lucky most teachers and my teacher clarify's this to all of us always.