A Radioactive Isotope of Atomic Number $Z$ Emits a Beta-Minus Particle, and Then the Daughter Nucleus Emits

Multiple Choice

A radioactive isotope of atomic number $Z$ emits a beta-minus particle, and then the daughter nucleus emits a gamma ray. What is the atomic number of the resulting nucleus after both processes?

A) $Z - 2$
B) $Z + 1$
C) $Z - 1$
D) $Z - 3$