Which statement is correct?

11.2.1 appreciate that protons and neutrons are not fundamental particles since they consist of quarks

11.2.2 describe a simple quark model of hadrons in terms of up, down and strange quarks and their respective antiquarks

11.2.3 describe protons and neutrons in terms of a simple quark model

11.2.4 appreciate that there is a weak interaction between quarks, giving rise to β decay

11.2.5 describe β– and β+ decay in terms of a simple quark model

11.2.6 appreciate that electrons and neutrinos are leptons