Plutonium-239 ($^{{239}}_{{94}}\text{Pu}$) undergoes decay by emitting $\alpha$-radiation. Which nuclide is produced in one of these decay processes? (The product nuclides are denoted by $X$.)
- A$^{{235}}_{{92}}X$
- B$^{{237}}_{{92}}X$
- C$^{{239}}_{{93}}X$
- D$^{{239}}_{{95}}X$