Answer:
Option B is the correct answer to this question.
Explanation:
A concomitant condition must emerge as a fact while both parties involved in the contract will be to execute at the same time. However, no party does have an obligation to act before the other group has produced or signed results. A group essentially needs to offer / tender participation with the present manifest potential to perform efficiently and this causes the other group to act.
Other options are incorrect because they are not related to the given scenario.