A large city newspaper periodically reports the mean cost of dinner for two people at restaurants in the city. The newspaper staff will collect data from a random sample of restaurants in the city and estimate the mean price using a 90 percent confidence interval. In past years, the standard deviation has always been very close to $\textbackslash$$35. Assuming that the population standard deviation is $\textbackslash$$35, which of the following is the minimum sample size needed to obtain a margin of error of no more than $\textbackslash$$5? 
选项为:A:$$90$$  B:$$112$$  C:$$133$$  D:$$147$$  E:$$195$$  请回答其中一个选项.