Bias. This is an opinion, so fact is ruled out. Propaganda means that it is a lie, which it technically is not. It is definitely bias, as a bias is a belief or opinion with no evidence as to why it is correct.
If you want to make a past emphatic tense, you need to use the verb DID + the present form of that particular verb. Assuming that the verb you need is TELL, the correct answer here would be did tell. We did tell you how to find our house.
