Which row of the table shows the quark structures of a meson and its anti‑meson?
The only correct answer is A because mesons are made of quark-
antiquark pairs and each quark in the anti-meson column is the antiquark
of a quark in the meson column
B is not correct because the same quarks have been used and not their
C is not correct because the particles contain more than a single quark and a
D is not correct because this pair represents a baryon and its corresponding