Sentence Correction

An attempt to ratify the Equal Rights Amendment, begun almost two decades ago, has been unsuccessful despite efforts by many important groups, including the National Organization for Women.

(A) to ratify the Equal Rights Amendment, begun almost two decades ago,
(B) begun almost two decades ago, for ratifying the Equal Rights Amendment
(C) begun for ratifying the Equal Rights Amendment almost two decades ago
(D) at ratifying the Equal Rights Amendment, begun almost two decades ago,
(E) that has begun almost two decades ago to ratify the Equal Rights Amendment

please lemme know that in A the word "begun" represents the amendment or the attempt.. also lemme know the difference between A and E. IMO, in E has begun is wrong and wordy and doesn't make much sense when used by another has afterwards..Please correct me if i am wrong about this reasoning..

IMO A.

"Attempt to" is the correct idiomatic usage.

IMO A.

"Attempt to" is the correct idiomatic usage.