When a Neutron Collides with a Uranium-235 Nucleus It Can $\begin{array} { c } 235 \\92\end{array}$

When a neutron collides with a uranium-235 nucleus it can induce a variety of fission reactions. One such reaction is $\begin{array} { c } 235 \\92\end{array}$ U + $\begin{array} { l } 1 \\0\end{array}$ n ? $\begin{array} { c } 140 \\54\end{array}$ Xe + $\begin{array} { l } 94 \\38\end{array}$ Sr + 2 $\begin{array} { l } 1 \\0\end{array}$ n The following mass values are known: $\begin{array} { c } 140 \\54\end{array}$ Xe: 139.921620 u $\begin{array} { l } 94 \\38\end{array}$ Sr: 93.915367 u $\begin{array} { c } 235 \\92\end{array}$ U: 235.043924 u $\begin{array} { l } 1 \\0\end{array}$ n: 1.008665 u
What mass of uranium is needed to produce a 10-kiloton yield? (1 u = 931.5 MeV/c² = 1.66054 × 10^-27 kg, 1-kiloton yield = 5.0 × 10¹² J)

A) 0.57 kg
B) 0.66 kg
C) 6.58 kg
D) 3.85 kg
E) 1.10 kg