The order of a leaf node in a B+ tree is the maximum number of (value, data record pointer) pairs it can hold. Given that the block size is 1K bytes, data record pointer is 7 bytes long, the value field is 9 bytes long and a block pointer is 6 bytes long, what is the order of the leaf node?
(A) 63
(B) 64
(C) 67
(D) 68

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  void foo(int x, int y)
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  (B) 5 and 12
  (C) 5 and 20
  (D) 12 and 20
  
  

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