Consider the interesting particle D = (c3), composed of a charm quark and strange anti- quark. Using the quark makeup of the particles, and assuming that only the charm quark de- cays (a good assumption because charm quarks decay far faster than strange quarks), which of the decays (a) D → K¯ + +† or (b) D → K+ + n+ +¯ is allowed and

Consider the interesting particle D = (c3), composed of a charm quark and strange anti- quark. Using the quark makeup of the particles, and assuming that only the charm quark de- cays (a good assumption because charm quarks decay far faster than strange quarks), which of the decays (a) D → K¯ + +† or (b) D → K+ + n+ +¯ is allowed and