 
<translate> Nọmba zuru ezu kwesịrị ịbụ nkewa site na: 12, 13, 14, 15 na 16, nke ahụ bụ 3*2^2, 13, 2*7, 3*5 na 2^4. Nke kacha nta n'ime ọtụtụ ndị a integers bụ ngwaahịa nke 13, 7, 5, 3 na 2 ^ 4. Mgbe ahụ, R/13 bụ (13 * 7 * 5 * 3 * 2 ^ 4) / 13 = 7 * 5 * 3 * 16 = 1680. N'ihi ya, azịza ya bụ (C). <eng> The integer should be divisible by: 12, 13, 14, 15 and 16, that is 3*2^2, 13, 2*7, 3*5 and 2^4. The least common multiple of these integers is the product of 13, 7, 5, 3 and 2^4. Then, R/13 is (13 * 7 * 5 * 3 * 2^4)/13 = 7*5*3*16 = 1680.
Therefore, the answer is (C). 