 
 <translate> Give stream of consciousness and then the final answer. The average of seven numbers is 21. The average of first three numbers is 19 and the average of last three numbers is 23. What is the middle number?
Options:
(A) 20
(B) 22
(C) 18
(D) 19
(E) 21 <ibo> Kwuo ihe ị ga-eme ma gwazie gị ihe ị ga-eme. Nkezi nke nọmba asaa bụ 21. Nkezi nke nọmba atọ mbụ bụ 19 na nkezi nke nọmba atọ ikpeazụ bụ 23. Gịnị bụ nọmba dị n'etiti? Nhọrọ: (A) 20 (B) 22 (C) 18 (D) 19 (E) 21 