The easiest way to remember which quarks make up a neutron is
A. Neutrons are all about u-three up quarks: uuu.
B. The neutron is a real "dud"-a down quark, an up quark, and another down quark: dud.
C. A neutron is an inside-out proton: uud.
D. Roses are red, violets are blue, neutrons are nosy but do not have u: ddd.
Answer: B
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