Figure 7.1 a Suspension of 106 Bacillus Cereus Endospores Was

Multiple Choice

Figure 7.1
A suspension of 106 Bacillus cereus endospores was put in a hot-air oven at 170°C. Plate counts were used to determine the number of endospores surviving at the time intervals shown.
-In Figure 7.1, the decimal reduction time (D value) for the culture, which is defined as the time to reduce a population by one log, is approximately

A) 40 minutes.
B) 30 minutes.
C) 0 minutes.
D) 10 minutes.
E) 60 minutes.