The Number of Typographical Errors in a Document Follows a Poisson

Multiple Choice

The number of typographical errors in a document follows a Poisson distribution with a mean of 4 errors per page. Let $X$ represent the number of errors on 2 pages. Find $P ($ Less than 3) .

A) 0.0138
B) 0.2381
C) 0.0030
D) 0.0134