In What Way Are Committees a Central Feature of the Distributional

In what way are committees a central feature of the distributional model?

A) Members pay party leaders to be assigned to committees.
B) Committees are not a central feature of the distributional model.
C) Parties control access to committees in the referral process.
D) Members do not value committees independently of monetary gain.
E) Committees allow members to insert specialized allocations into bills.