Figure 7.2 a Suspension of 106 Bacillus Cereus Endospores Was Put in Put

Figure 7.2
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 7.2, the thermal death time for this culture is

A) 0 min.
B) 40 min.
C) 20 min.
D) 10 min.
E) 60 min.