Which two statements are true regarding classless routing protocols? (Choose two.)

sends subnet mask information in routing updates
sends complete routing table update to all neighbors
is supported by RIP version 1
allows for use of both 192.168.1.0/30 and 192.168.1.16/28 subnets in the same topology
reduces the amount of address space available in an organization

ccna exploration 2 chapter 3 Exam Question And Answers 

Which two statements are true regarding classless routing protocols? (Choose two.)