you're the network administrator for a consulting firm. your network consists of the following: 30 laptops in the sales department 10 computers for hr 5 laptops for management 20 computers in marketing 15 computers in it you're using microsoft intune to manage the company's devices. you've created a new update ring called testing and need to choose the appropriate servicing channel. this ring will be used by testing computers that are set up by it. you want to receive early builds of feature updates so you can begin testing them for any bugs. which servicing channel should you select?