A number is called flippy if its digits alternate between two distinct digits. For example, 2020 and 37373 are flippy, but 3883 and 123123 are not. How many five-digit flippy numbers are divisible by 15? 
选项为:A:$$3$$  B:$$4$$  C:$$5$$  D:$$6$$  E:$$8$$  请回答其中一个选项.