The correct option is B Which is reasonable under the facts and circumstance of the case
Section 46-50 of the Indian Contract Act, 1872 talks about the Time and Place of Performance of contract. If no time is mentioned in the contract, then it is assumed that it will be done in a reasonable time. That means the time would depend on the circumstance and the facts of the case. The time will differ from one case to the other since it takes different time periods for finishing different kinds of projects.