Which Reactant and Product Would Balance the Following Nuclear Reaction $\rightarrow$

Which reactant and product would balance the following nuclear reaction equation?
reactant =¹² C $\rightarrow$ ¹¹ B + product

A) reactant = $\beta$ -, product =1H
B) reactant = $\beta$ +, product = 1n
C) reactant = $\beta$ -, product = 1n
D) reactant = $\beta$ +, product = $\alpha$
E) reactant = 1H, product= $\alpha$