Proceeding without a definite plan for upcoming labor negotiations, like the firm had agreed to last year, it would surely have proven to be a disaster in the face of the skilled and resolute opposition involved this time.
A. Proceeding without a definite plan for upcoming labor negotiations, like the firm had agreed to last year, it would surely have proven to be a disaster
B. Proceeding without a definite plan for upcoming labor negotiations, as the firm agreed last year to do, would surely have proven to be a disaster
C. Going ahead without the presence of a definite plan for upcoming labor negotiations, like the firm had agreed last year to do, would surely have proven disastrous
D. To proceed without the presence of a definite plan for upcoming labor negotiations, as the firm had agreed to last year, would surely have proven disastrous
E. Going ahead without their having a definite plan for upcoming labor negotiations, as they agreed to last year, it would surely have proven to be a disaster for the firm