3. Consider the following B-tree Root Fanout: n-3 For each of the following queries, compute the minimum number of disk IOs to retrieve the records (not including the disk IOs to read the records). We assume we need to follow the sequence pointers of the leaf nodes to traverse the leaf nodes (if necessary) 1. Find record(s) with the key value 160 2. Find record(s) with the key value 280. 3. Find records with the key values in the range 30 to 50 inclusive. 4. Find records with the key values in the range 30 to 60 inclusive. 5. Find records with the key values in the range 30 to 75 inclusive. 6. Find records with the key values in the range 30 to 90 inclusive. 7. Find records with the key values in the range 30 to 220 inclusive. 8. Find records with the key values in the range 30 to 240 inclusive. a) Find record(s) with the key value 160: 4 IOs. b) Find records with the key values in the range 30 to 75 inclusive: 5 IOs. c) Find record(s) with the key value 28: 3 IOs. d) Find records with the key values in the range 30 to 75 inclusive: 3 IOs. 3. Consider the following B-tree Root Fanout: n-3 For each of the following queries, compute the minimum number of disk IOs to retrieve the records (not including the disk IOs to read the records). We assume we need to follow the sequence pointers of the leaf nodes to traverse the leaf nodes (if necessary) 1. Find record(s) with the key value 160 2. Find record(s) with the key value 280. 3. Find records with the key values in the range 30 to 50 inclusive. 4. Find records with the key values in the range 30 to 60 inclusive. 5. Find records with the key values in the range 30 to 75 inclusive. 6. Find records with the key values in the range 30 to 90 inclusive. 7. Find records with the key values in the range 30 to 220 inclusive. 8. Find records with the key values in the range 30 to 240 inclusive. a) Find record(s) with the key value 160: 4 IOs. b) Find records with the key values in the range 30 to 75 inclusive: 5 IOs. c) Find record(s) with the key value 28: 3 IOs. d) Find records with the key values in the range 30 to 75 inclusive: 3 IOs