Dart Company and its divisions are engaged solely in manufacturing operations. The following data pertains

to the industries in which operations were conducted for the year ended December 31, 2017.

Segments Total revenue Operating profit Identifiable assets

A 13,000,000 4,000,000 25,000,000

B 9,000,000 2,000,000 20,000,000

C 7,700,000 1,500,000 15,000,000

D 3,000,000 1,000,000 7,000,000

E 3,800,000 800,000 8,000,000

F 3,500,000 700,000 5,000,000

40,000,000 10,000,000 80,000,000

In its segment information for 2017, how many reportable operating segments does Dart have?