You were preparing the slides and accidentally spilled some broth inoculated with unknown but potentially highly pathogenic bacteria over the table. Your partner did not notice that and put the marker on that spot while labeling the slides. Then he passed marker to the other working pair of students. Everybody routinely washed their hands with regular soap by the end of the lab and left home. How many direct and indirect transmission episodes could you expect after all?
A. 1 direct and 3 indirect transmissions
B. 1 direct and 2 indirect transmissions
C. 3 indirect transmissions
D. Unknown number of direct and indirect transmissions