If you have any USB C device, like the latest laptop or Android smartphone, you probably already have USB c-to-c cable for them.
In that case, you can share and use the existing c-to-c cable for 5K DAC.
On the other hand, if you don't have any USB C device, you probably have no c-to-c cable, and you don't need to have a c-to-c cable.
But you will need a c-to-A cable for your devices.
Anyway, we'll check which one is the best option for 5K.