Fundamental particles — practice question

How are the proton and the neutron structured in terms of quarks?

• Aproton: up quark $1$, down quark $1$; neutron: up quark $2$, down quark $2$
• Bproton: up quark $1$, down quark $2$; neutron: up quark $2$, down quark $1$
• Cproton: up quark $2$, down quark $1$; neutron: up quark $1$, down quark $2$
• Dproton: up quark $2$, down quark $2$; neutron: up quark $1$, down quark $1$