 
<translate> Tukwici: m ^ 2-5 (m lamba ce) ba ta da yawa da 3 (gwada wannan), saboda haka 30 ya fita. Amsar ƙarshe: (C). <eng> Hint: m^2-5 (m is an integer) is never multiple of 3 (try to prove this), hence 30 is out.
The final answer: (C). 