选择题
2017 AMC 8 Problem 24: Grandchildren Phone Calls
Mrs. Sanders has three grandchildren who call her regularly. One calls every 3 days, one every 4 days, and one every 5 days. All three called her on December 31, 2016. On how many days during the next year did she not receive a phone call from any grandchild?
2017 AMC 8 第 24 题：孙子打电话
桑德斯夫人的三个孙子经常给她打电话。每 3 天 1 个电话、每 4 天 1 个电话、每 5 天 1 个电话。 2016年12月31日，三人都给她打电话。接下来的一年里，她有多少天没有接到孙子的电话
A.
78
B.
80
C.
144
D.
146
E.
152