How Does the Second Tier Compare with the Third Tier

How does the second tier compare with the third tier in the tiered intervention framework?

A) The second tier comprises preventative classroom interventions. The third involves social-emotional teaching strategies.
B) The second tier comprises social-emotional teaching. The third is preventative classroom interventions.
C) The second tier is building positive relationships. The third is social-emotional teaching.
D) The second tier is building positive relationships. The third is preventative classroom interventions.