Fifty percent of the subscribers to newspaper X are corporat

Fifty percent of the subscribers to newspaper X are corporate managers and, of these, 30 percent are in the financial field. If 40 percent of the subscribers who are corporate managers in the financial field are money managers, how many of the newpaper's 25000 subscribers are corporate money managers in the financial field?

a) 1,500
b) 3,000
c) 3,750
d) 7,500
e) 8,750

Please provide detailed explanations!