Table:
text: 1990–91 Football Conference
Top scorers in order of league goals
Top scorers in order of league goals
Player Club League FA_Cup FA_Trophy League_Cup Total
Gary Bull Barnet 30 2 0 0 32
Mark West Wycombe Wanderers 24 6 3 0 33
Ken McKenna Altrincham 22 3 3 2 30
Mark Carter Barnet 19 0 1 1 21
Paul Randall Bath City 19 0 3 0 22
Colin Cowperthwaite Barrow 18 0 1 2 21
Terry Robbins Welling United 18 2 0 1 21
Mario Walsh Colchester United 17 0 1 0 18
Paul Cavell Boston United 16 5 2 1 24
Nicky Evans Barnet 16 5 0 0 21
Charlie Butler Gateshead 15 0 0 1 16

Question: From the 1990-91 Football Conference list, which League Cup has an FA Cup over 5 and a Club of Boston United and a League under 16?

Question: How many FA Trophy does a Mario Walsh player and a league greater than 17 for the 1990-91 football conference?