$3\mathrm{.}14$ Interpreting the Relation between Net Income and Cash Flow from Operations.Combined data for three years for two firms follow $($in millions$).$

$$

Firm A

Firm B

Net income

$$2,381$

$$2,825$

Cash flow from operations

$1,133$

$7,728$

One of these firms is Amazon.com, a rapidly growing Internet retailer, and the other is Kroger, a retail grocery store chain growing at approximately the same rate as the population. Identify each firm and explain your reasoning.