Problem
During a presidential endorsement bet, there are about 116 politicians present despite the pandemic, quarantine protocols, and no to mass gathering protocols. Due to the "strict" protocols, they were group into 4 with equal numbers for the "not so fancy dinner foods". The first group were assigned to room 1 where spaghetti was served. The second group were assigned to eat pansit. The third group are in the room with lobster. And the last group ate lechon. It is noted that 26 politicians who had spaghetti had diarrhea. What is the incidence rate?