A survey of $200$ people in a community who watched at least one of the three channels – BBC, CNN and DD showed that $80$% of the people watched DD, $22$% watched BBC, and $15$% watched CNN.
Referring to the previous question, how many percents of the people watched all the three channels?
- $3.5$%
- $0$%
- $8.5$%
- Cannot be determined