Which quarks will I find in a neutron? (only one answer is correct)
A: Three up quarks.
B: Two up quarks and a down quark.
C: Two down quarks and an up quark.
D: One charm quark, one up quark and one down quark.
A: Three up quarks.
B: Two up quarks and a down quark.
C: Two down quarks and an up quark.
D: One charm quark, one up quark and one down quark.