In One Research, Medication a Was Compared to Conventional Treatment

In one research, medication A was compared to conventional treatment in the prevention of recurrent pulmonary embolism (PE) . The absolute risk decrease for medication A compared to usual care was 4%. In the usual treatment group, the incidence of recurrent PE was 6%. There were 24 individuals in the drug A group who got recurrent PE. How many people were in the drug A group in total?

A) 600
B) 900
C) 1200
D) 1500
E) 1800
F) 2100