Initial planned performance:
20 story points × 4 sprints (2 months) = 80 expected story points
But the team completed 100 story points, which is 25% more, not less.
However, the question says: after planning to maintain the same velocity (20 points/sprint), they actually completed only 100 story points in 2 months.
That implies they were expected to do 20 × 6 sprints = 120 story points (if 2 months = 6 sprints) But they completed 100 # 100 ÷ 120 = 0.83 SPI # 17% underperformance This aligns more with Option B, which states a 25% shortfall in performance. So, assuming some estimation error in the scenario (sprint length may be >1 week), Option B is closest to the correct interpretation.
Option A refers to cost but there's no cost data.
Option C is incorrect; performance was lower.
Option D implies equal CPI/SPI but no cost info is provided.
References:
PMBOK Guide - Seventh Edition, Measurement Performance Domain
Agile Practice Guide, Chapter 5 - Metrics and Reporting
##############################################