Jose has developed a nutrition app for people to log their food intake. His app’s servers occasionally go down, and when he totals the amount of downtime, it is one day out of every 100 days. Should he be concerned?

A.
Yes, because any amount of downtime is unacceptable.

B.
Yes, because his downtime is more than 0.01 percent.

C.
No, because it is normal for an app to be down 1 percent of the time.

D.
No, because the downtimes are usually at night, so users won’t be affected.