Columns in a table may be zonemapped. How are those columns chosen?

Question

Options

• AThey are automatically selected by the system.
• BThey are based on the same columns as the table's distribution key.
• CThey are added via the ALTER TABLE ADD INDEX(column_name) statement.
• DThey are added via the ALTER TABLE ADD ZONEMAP(column_name) statement.

• A
  83% (33)
• B
  5% (2)
• C
  3% (1)
• D
  10% (4)

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