What is the correct order of encapsulation?

A. User datagrams, packets, segments, frames, bits
B. User datagrams, sessions, segments, packets, frames, bits
C. User datagrams, segments, packets, frames, bits
D. Bits, frames, sessions, packets, user datagrams

C. The correct order of encapsulation starting with the Application layer is user datagrams, segments, packets, frames, and bits.