When customers have their groceries scanned at the supermarket checkout counter, data regarding product sales and coupon redemptions are collected and processed by tracking services such as $|\mathrm{????}|$ I$\text{'}$s InoScan. Consumer product firms such as Procter & Gamble use data collected by IRI to allocate scarce marketing resources. For PGG$,$ such data should be considered

internal secondary data.

primary data.

external secondary data.

sensitivity analysis.

probability data.