Common App Error putting admission in jeopardy???

On the message below this I put down yes when It should be no, this is my only mistake on the whole app and I already submitted it. I am on the verge of tears right now. This is for Colorado University. It should be marked down as No and I have the number of my admissions consoler and email so I was wondering if I should call or email him about it. So assuming I call or email him how big of a impact is this going to make on me getting accepted

At least through Yes the 3rd level of a
single foreign language?

Yes

I suggest you contact the admissions officer at CU and just be open. Tell them how many years you had. Be honest–they will understand you make mistakes! DON’T lie!