What happened to the rate of cannabis use by young Canadians between 2004 and 2009,according to a recent survey by Health Canada on drug use

A)  It remained unchanged. 
B)  It decreased. 
C)  It doubled. 
D)  It remained unchanged, but its use is causing more problems in society.

Health Canada

The federal department responsible for maintaining and improving the health of Canadians.

Cannabis Use

The consumption of cannabis, a psychoactive drug from the Cannabis plant, used medically or recreationally.

Young Canadians

Typically refers to the youthful population of Canada, often considered in discussions of demographics, education, employment, and cultural trends.