I am just about to walk into the Apple Store. I have both 29W and 85W USB-C chargers (that came with my MacBooks). If I buy the USB-c to lightning cable, can I use either of these to charge my 10.5" iPad Pro? And is the officially confirmed by Apple? Apologies if this has been answered before, but I am really confused with what is okay and what is not with the 'fast charging' stuff.