there are 100 students in a class. Among these students 20 Speaks in English. 15 in Amharic, 18 in tigrigna, 10 in English and Amharic,7 Amharic & Tigrigna, 4 in English and Tigrigna,and 4Students three of the languges, then how many students speak A) English and Amharic but not Tigrign B) Amharic and Tigrigna but not english C) Amharic only D )more than one language E) Neither of the three languages
​