SAT writing question

Adopted in 1997, the Kyoto Protocol (is what was the international agreement) to reduce the green house gas emissions of industrialized nations over a five-year period
(A)is what was the international agreement
(B)was when it was internationally agreed
©was where the international agreement was
(D)being internationally agreed
(E)is the international agreement
… the answer is (E), but isn’t (E) in a wrong tense?? and why is the answer © wrong??

“where” indicates we should have a place, and we do not have any. And no, not wrong tense. We can use the present tense to state a fact.

thanks mate >:D<