1, A-green tea, B-black tea, C-Pu 'er tea
2.A-green tea, B-Pu 'er tea and C-black tea.
3.A-black tea, B-green tea and C-Pu 'er tea.
4.A-black tea, B-Pu 'er tea and C-green tea.
5.A-Pu 'er tea, B-black tea and C-green tea.
6.A-Pu 'er tea, B-green tea and C-black tea.
Anyway, there are six answers to this kind of question.
Hope to adopt, thank you! ! !