I found my views to be congruous to those of my father.

Answer: Option C

Congruous : in agreement or harmony.
Irregular : not even or balanced in shape or arrangement.
Mismatch : a failure to correspond or match; a discrepancy.
Inconsistent : acting at variance with one's own principles or former behaviour.
Disagreeing : have or express a different opinion.

Antonym of Congruous is Inconsistent