11. please help

Use the following information to answer the next question Four nuclear processes 1. 227 Ra -> 223Rn +... 88 86 11. 222 Rn 222 At +... 80 85 III. 227 Ra - 227 Act... 88 89 IV. 222 R -> Pot... 86 84 11. Listed in order, the decay types for the reactions above are: Da, B*, B, and a. B, B. a, and a. ( B. a, a, and B " a. B, B, and a