According to the article, why did scientists smear germs around people's homes for the second part of the study?
А
The scientists wanted to find out how long it took for people to catch colds after
coming in contact with germs.
B
The scientists wanted to determine how long the viruses remained on various
household surfaces

с
The scientists wanted to find out if germs wiped on remote controls would be
transferred to door handles
int
ea
D
The scientists wanted to determine if using hand sanitizer prevented people from
getting sick