Terrible triad.. readial head fracture, medial condyle fracture &elbow dislocation

Terrible triad:
a . # head radius,#coronoid &elbow dislocation.
b. readial head fracture, sc fracture &elbow dislocation.
c.  readial head fracture, medial condyle fracture &elbow dislocation.
d. readial head fracture, lateral condyle fracture &elbow dislocation.