What Nucleus Decays by Successive ?, ?, ? Emissions to Produce

What nucleus decays by successive ?, ?, ? emissions to produce uranium-236?

A) ${ } _ { 88 } ^ { 232 } \mathrm { Ra }$
B) ${ } _ { 88 } ^ { 230 } \mathrm { Ra }$
C) ${ } _ { 92 } ^ { 240 } \mathrm { Pu }$
D) ${ } _ { 94 } ^ { 242 } \mathrm { Pu }$
E) ${ } _ { 92 } ^ { 240 } \mathrm { U }$