In the retrospective meeting, an Agile team discussed few improvement points. They implemented those points it in the next sprint. This helped the team to increase the amount of work they were doing in the given period of time. Out of the followings what would not be the reason for it?
a. Duration to complete the work is reduced
b. Amount of work being done is increased
c. New members are added to the team
d. Smaller user stories are picked