Which two situations can lead to sparsely populated ind…

Which two situations can lead to sparsely populated index blocks?(Choose two.)

A.
Data is frequently inserted using direct path load into a table with an index.

B.
Indexed columns in a table are frequently updated.

C.
Values in an indexed column are inserted using monotonically incrementing sequences.

D.
Bulk delete operations are performed on a table with indexes.

E.
Online table move operations are performed frequently on a table with indexes.

Explanation:
https://books.google.com.pk/books?id=b3DIkYO2gBQC&pg=PA350&lpg=PA35
0&dq=situations+can+lead+to+sparsely+populated+index+blocks&source=bl&ots=yVTwF

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