Which statement is false?
A. The NTP stratum describes how many hops away that a system is from an authoritative time source.
B. A Cisco IOS XR device can be directly connected to an atomic clock and provide a stratum 1 service.
C. A Cisco IOS XR device can be configured as a stratum 1 master clock source.
D. UTC is a global time scale that is distributed by atomic clocks over the Internet, over specialist long-wave radio transmissions, or with the Global Positioning System (GPS) network.
