Match the nuclei/reaction with the process involved.

Explanation

A - p, q B-s C - r, t D - p, q
(A) `""_(92)^(238)U to ""_(90)^(234)Th + ""_(2)^(4)He (alpha-"decay") to ""_(91)^(234)Pa (beta-"decay")`
(B) The process by which a stable isotope is converted into readioactive element by artifical means (artifical transmutation ) is called artifical or induced redioactivity.
(C) `""_(5)^(9)B to ""_(4)^(9)Be + ""_(+1)^(0)e` (positron emission), `""_(5)^(9) B + ""_(+1)^(0)e to ""_(6)^(9)e to ""_(6)^(9)C` (electron capture)
(D) `""_(88)^(226) Ra to ""^(216)Pb (3alpha - "decay") to ""^(214)Po (2beta - "decay")`