Between 1870 and 1920, the total labor force increased by threefold wh

Between 1870 and 1920, the total labor force increased by threefold while

(a) the total number of people employed in agriculture increased by almost twofold and the total number of people employed in manufacturing and other non- agriculture increased fivefold.
(b) the total number of people employed in agriculture increased by almost fivefold and the total number of people employed in manufacturing and other non- agriculture increased
by threefold.
(c) the total number of people employed in agriculture increased and the total number of people employed in manufacturing and other non- agriculture increased by threefold.
(d) the total number of people employed in manufacturing and other non- agriculture increased
fivefold while agriculture decreased by twofold.

ANSWER

(a)