In addition to the popular fusion reaction we come across, a second process called the carbon-nitrogen cycle occurs in the sun:
`""_(1)""^(1)H+""_(6)""^(12)Cto""_(0)""^(0)gamma+""_(7)""^(13)N` ,` ""_(13)""^(7)Nto""_(+1)""^(0)e+""_(13)""^(6)C`
`""_(1)""^(1)H+""_(6)""^(13)Cto""_(0)""^(0)gamma+""_(7)""^(14)N` ,`""_(1)""^(1)H+ ""_(7)""^(14)Nto""_(0)""^(0)gamma+""_(8)""^(15)O`
`""_(8)""^(15)Oto""_(+1)""^(0)e+""_(7)""^(15)N, ""_(1)""^(1)H+""_(7)""^(15)Nto""_(6)""^(12)C+""_(2)""^(4)He+""_(0)""^(0)gamma`
`4""_(1)""^(1)Hto""_(2)""^(4)He+2""_(+1)""^(0)e`
In the following nuclear reaction P and Q cannot be `""_(7)""^(15)N+Pto""_(7)""^(14)N+Q`

Options

A. (`alpha,n`)
B. (`gamma,n`)
C. (d,t)
D. (p,d)

Answer

a

Explanation

`N//A`