For indoors or in low light (eg early morning or evening) the 70-200mm f2.8 would be my choice. You need the f2.8 aperture for the low light conditions to help you capture as much light as possible for a good exposure.
For outdoors in good light then the 100-400mm would give an edge in range and likely be a very solid choice; but in lower light you will find it will struggle.
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