Psychedelic-Era Marijuana Joints Have ______ While Present-Day Marijuana Joints Are

Psychedelic-era marijuana joints have ______ while present-day marijuana joints are to _____.

A) 1 to 2 percent THC;8 percent THC,
B) 5 percent THC;9 percent THC
C) 1 to 2 percent THC;6 to 10 percent THC
D) 0.5 percent THC;1 to 2 percent THC