The contraindication of functional appliance in class II Pt.. Protracted lower central incisor

The contraindication of functional appliance in class II Pt:

OR

The contraindication of functional appliance in class II division (I):

a. Protracted up central incisors

B. retracted upper central incisor 

c. Protracted lower central incisor ***

D. retracted lower central incisor.