Inclined to lay down principles as undeniably true

Three words are given, which can be fill the blank in the below sentence suitably. Select the word/s which can be a correct fit in the blank.

The manager is increasingly losing his popularity among the employees because of his stubborn and ________ style of working.
a) dogmatic
b) prejudiced
c) submissive

1. only a
2. a and c
3. a and b
4. only c
5. none of the above

Answer

Option 3 : a and b

Inclined to lay down principles as undeniably true