选择题
2016 AMC 8 Problem 20: Least Possible LCM
The least common multiple of a and b is 12, and the least common multiple of b and c is 15. What is the least possible value of the least common multiple of a and c?
2016 AMC 8 第 20 题：最小可能 LCM
a和b的最小公倍数是12，b和c的最小公倍数是15。a和c的最小公倍数的最小可能值是多少
A.
20
B.
30
C.
60
D.
120
E.
180