Morgan Goldman has 5 Senior Managing Directors and 5 Managing Directors. Each investment banking deal requires the guidance of three managing directors, at least one of which must be a Senior Managing Director. How many possible investment banking deals can Morgan Goldman possibly provide guidance for? Choose the correct choice:
A) 16
B) 36
C) 110
D) 154
E) 210
P(at least 1 S D) = P(Total) - P(0 Senior Director)   =101103 - 51103   = 110
<result>C</result>
Morgan Goldman has 5 Senior Managing Directors and 5 Managing Directors. Each investment banking deal requires the guidance of three managing directors, at least one of which must be a Senior Managing Director. How many possible investment banking deals can Morgan Goldman possibly provide guidance for?