What are P, R, and S?
P: up quark, R: W+W^+W+, S: β+\beta^+β+
P: down quark, R: W−W^-W−, S: β−\beta^-β−
P: down quark, R: W+W^+W+, S: β−\beta^-β−
P: up quark, R: W−W^-W−, S: β+\beta^+β+