Answer:
D. Left,left
11 is less than 20 as well as it is less than 25 years. And we move from left to right on the timeline. Thus 11 is left of 20 and it is left of 25 years as well. And timeline is the core of a project management software. The Gantt and Pert chart are totally based on the timeline. Software like Microsoft project use the timeline quite a lot, and you cannot survive without the knowledge of the timeline in software project management.
Explanation:
Timeline knowledge is a must for a software professional, and the above answer does not require explanation.