4. In the extensible hash index (each bucket can hold at most 2 items) below, if we want to insert 19, what will be the structure of the hash index after the insertion? 2 16 20 A h(1) =00001 h(2) = 00010 h(3) = 00011 h(7) = 00111 h(16) = 10000 h(18) = 10010 = 10011 00 01 1 B 10 11 2 Directory 3. h(20) = 10100 D %3D Buckets

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