A number for each figures are given from 1 to 9 . Find out the best method of classification and identify this amongst the four alternative .
ক) (1,3,5),(2,6,9),(4,7,8)
খ) (2,3,4),(5,6,8),(9,1,7)
গ) (1,3,5),(2,6,8),(4,7,9)
ঘ) (3,2,4),(6,5,8),(7,9,1)