Fisher net cash provided by operating activities

Question

Problem: Fisher Corporation had net income for 2008 of $3,000,000. Additional information is as follows:

Depreciation of plant assets     $1,200,000
Amortization of intangibles           240,000
Increase in accounts receivable    420,000
Increase in accounts payable        540,000

Fisher's net cash provided by operating activities for 2008 was

A)    $4,560,000.
B)    $4,440,000.
C)    $4,320,000.
D)    $1,680,000.