Amswer is C (Both statements are true)
You can verify this with your home router also.
setup:
Take n routers and connect them Lan.
Now ping one router from another router(in between say there is n-2 routers) , you will get TTl as XYX , and now move closer and now ping from another router(in between n-3 routers) , you will find the TTL is decresed by 1 , i.e (XYZ-1)
You can ping router by attaching to laptop and in command prompt type Ping followed by Ip address.