Select all statements that correctly compare operational data and decision support data.

	a.	Operational data is centered around individual transactions, while decision support data is centered around how the data relates to major subjects.
	b.	Operational data and decision support data are both used to accomplish the same goals, and whether to use operational data or decision support data to solve a particular problem is mostly inconsequential.
	c.	Operational data usually covers a longer timeframe, while decision support data usually covers a shorter timeframe.
	d.	Operational data is usually aggregated at different levels, while decision support data is usually not aggregated and is present in its most atomic form.

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