In the Texas Legislature, When a Committee Chair "Pigeonholes" a Bill

In the Texas legislature, when a committee chair "pigeonholes" a bill, what happens?

A) The bill is set aside before it is ever discussed in committee.
B) The bill is referred to a special session.
C) The chair vetoes a bill after it has already received an affirmative committee vote.
D) The chair refers a bill to only one subcommittee rather than two or more.