Choose B. probability refers to the probability of various situations of one thing, and the probability of each event cannot be superimposed. The winning rate of 65438+9/00 means that winning events account for 9/00 of all lottery purchase events after statistics. The winning event is close to 10, and there are 9 people, which is the frequency. The probability is also random, so although there is a winning probability of 9/ 10, there is still a missing prize probability of110, so choose B.

The mistake of option A is to ignore the failure rate of110.

The error of options C and D lies in the probability superposition of each occurrence.