The reaction(s)/ event(s) used to prove the existence of neutrinos is/are

A. $$e^+ + e^- \rightarrow \gamma + \gamma$$​​

B. $$^{113}\text{Cd}(n,\gamma)^{114}\text{Cd}^*$$​​

C. $$^{133}\text{Cs}(\alpha,4n)^{133}\text{La}$$​​

Choose the correct answer from the options given below:

Correct option is B

A neutrino (denoted by the Greek letter ν) is an elementary particle that interacts via the weak interaction and gravity. The neutrino is so named because it is electrically neutral and because its rest mass is so small that it was long thought to be zero. The weak force has a very short range, the gravitational interaction is extremely weak due to the very small mass of the neutrino, and neutrinos do not participate in the electromagnetic interaction or the strong interaction. Thus, neutrinos typically pass through normal matter unimpeded and undetected. 

Weak interactions create neutrinos in one of three leptonic flavors:

a. electron neutrino,ν_e

b. muon neutrino,ν_​μ 

c. tau neutrino,ν_τ