In your construction project, the CPI is 1.30 and SPI is 0.85. What could be the potential reason
A) A critical resource went on sick leave for a long period of time, which had not been anticipated earlier.
B) The Cost of raw materials required for construction increased 10%.
C) You had not taken into account inflation rate.
D) There was 4 days waiting time in the curing of cement, and work could not be done during that time.