Marketing agent: A survey of my business clients reveals that, of those who made a profit last year, 90 percent made at least $100, 000 in profit for the year. In prior years, not one of these businesses made an annual profit of more than $10, 000. So, 90 percent of my business clients increased their profits at least tenfold last year. The reasoning in the marketing agent's argument is most vulnerable to criticism on the grounds that the argument
A: overlooks the possibility that the business clients who made more than $100, 000 last year made only slightly more than $100, 000
B: fails to explain why some of the business clients who made a profit did not increase their profits at least tenfold last year
C: overlooks the possibility that not all of the business clients made an annual profit of more than $10, 000 last year
D: draws a conclusion about all of the business clients from premises about the business clients who made a profit last year
Choose A, B, C or D as your solution.
D