Complete and Balance the Equation $^{234}_{~~90}\mathrm{Th} \rightarrow{ }_{-1}^{~~~0} \beta+?$ A) ${ }_{92}^{234} U$

Complete and balance the equation $^{234}_{~~90}\mathrm{Th} \rightarrow{ }_{-1}^{~~~0} \beta+?$

A) ${ }_{92}^{234} U$
B) ${ }_{91}^{234} \mathrm{~Pa}$
C) ${ }_{93}^{234} N p$
D) ${ }_{90}^{233} \mathrm{Th}$
E) None of the above