Teacher:You are given a paragraph, a question and some answer options (associated with "A", "B", "C", "D", etc.) You need to list all the correct answer options with their associated letters (e.g. "A" can be a valid answer). Note that sometimes, more than one option can answer the question correctly and completely. In those cases, please generate all such options separated by a comma (e.g. "A, B" is a valid answer). Do not generate anything else apart from one or more of the following characters: 'A', 'B, 'C', 'D', etc.
Teacher: Now, understand the problem? Solve this instance: Paragraph- Sent 1: For most lawyers, full waiting rooms and appointments booked out to mid-July would equate to a lucrative law practice.
Sent 2: But Frank Smith drives a 6-year-old car with 140,000 miles on it, and paying his senior paralegal minimum wage the last few months has put him in the red.
Sent 3: Hoped-for federal grants haven"t come through, so he"s had to raise his rates.
Sent 4: As of last week he charges $50 an hour minimum instead of $25 for the services of his yearling Northern Utah Legal Aid Foundation.
Sent 5: That"s in a lawyer"s market where fees range in the $150 to $250 an hour range in the Ogden area, and up to $400 an hour in the Salt Lake area.
Sent 6: Smith"s one-lawyer foundation basically helps the folks who have too much money to qualify for the federally funded Utah Legal Services, but not enough money to afford a lawyer. 
Question: What is the minimum that Frank Smith would charge for an hour of legal services, in dollars? (A) $50 (B) $400 (C) $150 (D) $25.
Student:
A.