Hi, due to an alleged sexual abuse case for my kid, the police asked me to do a polygraph test yesterday. After the test, they told me that I did not pass the test and they told me that I must have lied. But in fact I did not. Should I just tell them that I did not lie although I failed the test? What consequence will I face if I just call them back and tell them I did not lie in the case? I truly cannot think of anything that I have lied.