Study the following information carefully and answer the given questions: The following table shows the total number of mails received in inbox by different users and the percentage of mails read by the users and the total number of spam mails received in a month

Note: “-“ indicates missing data Useful Mails = Total Mails in Inbox- Spam mail
If Mayank read 20 % of spam Mails, then find out the useful mails read by him?

Options

A. 454
B. 899
C. 999
D. 565