no. of promoters

help me identify the promoters

case 1
A and B are directors in the company
and B and C are shareholders
Can all three A,B,C be promoters

case 2
A and B are directors
and A, B and C are shareholders
can all three A,B,C be promoters

case 3
A , B and C are directors
and B and C are shareholders
can all three be promoters