Who has written the book ‘Principles of Economics’?(A) Adam Smith(B) Marshall(C) Robbins(D) Samuelson

Who has written the book ‘Principles of Economics’?(A) Adam Smith(

1.	Who has written the book ‘Principles of Economics’?(A) Adam Smith(B) Marshall(C) Robbins(D) Samuelson
Answer» Correct option is (B) Marshall