Callahan Company earned $4,300 of cash revenue, paid $2,400 for cash expenses, and paid a $900 cash dividend to its owners. Which of the following statements is true?

The net cash flow from operating activities was $1,000.

The net cash flow from investing activities was an outflow or decrease of $900.

The net cash flow from operating activities was $1,900.

Cash flows from financing activities were unchanged.