Detailed Instructions: Given a sentence, judge the quality of this sentence by indicating "Good" and "Bad". The quality depends on the grammar and the meaning of the sentence. If a sentence is easily understandable, and doesn't have grammatical errors, answer with "Good", otherwise answer with "Bad".
Q: Bulk mailers with sufficient volumes of mail for areas served. We assume only presorted mail to the carrier route level would be vulnerable to cream skimming.
A:
Bad