Answer:
C. 396
Explanation:
You want the LCM of 4, 18, and 44.
LCM
You can find the least common multiple by considering the unique factors to their highest powers.
4 = 2^2
18 = 2·3^2
44 = 2^2·11
The unique factors are 2, 3, 11, and their highest powers are 2, 2, and 1, respectively. The LCM is ...
2² × 3² × 11 = 396
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Check
396 = 4·99 = 18·22 = 44·9 . . . . . 99, 22, and 9 have no common factors