i have a 2000 honda civic sedan lx i need to know what type of engine i have i think it is a D16 Z am i right

Either a D16Y8 or D16Y7. The Y8 is Vtec and Y7 isn't.

neither, it is a D16y5 I am 100% sure of it

neither, it is a D16y5 I am 100% sure of it
This site says different, but they also say my chassis code is an EJ6..? Thought I had an EK?

http://www2.pitstopautoparts.com/parts/pitstopautoparts/models.jsp?make=HO&year=2000