What Is the Correct Nuclear Symbol for the Unknown Product $238$

What is the correct nuclear symbol for the unknown product "X" in the nuclear equation shown below? $238$
92 U ? X + 4
2 He

A) 234
90 Th
B) $\begin{array} { c } 226 \\88\end{array}$ Ra
C) 234
90 U
D) 242
94 Pu
E) 234
94 Pu