Suppose We Know the Following Information About the Labour Market

Suppose we know the following information about the labour market.Over a one-month period: -total number of previously unemployed workers that found jobs = 500 000
-total number of individuals that became unemployed = 500 000
During the same month the unemployment rate increased from 7.1% to 7.3%.It must be the case that

A) the population increased during that month.
B) the population decreased during that month.
C) a certain number of people entered the labour force during that month.
D) the gross flow and the net flow into unemployment are equal.
E) a certain number of people left the labour force during that month.