How many subsets of \{2,3,4,5,6,7,8,9\} contain at least one prime number?

**Answer Choices**

A. 128

B. 192

C. 224

D. 240

E. 256

How many subsets of \{2,3,4,5,6,7,8,9\} contain at least one prime number?

**Answer Choices**

A. 128

B. 192

C. 224

D. 240

E. 256