influence of cold cracking susceptibility of heat effected zone in an arc welding

Question

The cold cracking susceptibility of the heat affected zone in an arc weld is influenced by    

P. entrapped hydrogen

Q. Residual stresses

R. Marternsitic transformation

S. Slag inclusion

(a) P, S                            (b) P, Q, S

(c) P, Q, R                        (d) R, S