Arrange the following events in the correct historical order:
A. Introduction of Electroconvulsive Therapy
B. Contributions of Hippocrates and Galen
C. Mass Hysteria in the context of witchcraft and demonology
D. J.P. Grey and E. Kraeplin's contributions to biological models
1
B, C, A, D
2
C, B, A, D
3
A, D, C, B
4
D, C, B, A