B-tree of order n is a order-n multiway tree in which each non-root no

1.	B-tree of order n is a order-n multiway tree in which each non-root node contains __________
A.	at most (n – 1)/2 keys
B.	exact (n – 1)/2 keys
C.	at least 2n keys
D.	at least (n – 1)/2 keys
Answer» E.

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