Which of the following is NOT true of a myofibril?

A) Thin myofilaments consist of actin, troponin, and tropomyosin.
B) Elastic filaments are composed of titin.
C) Thick myofilaments consist of myosin.
D) Myofibrils are composed of muscle fibers.
E) All of these are true of myofibrils.

The last step in the grievance process for nearly all union contracts in both the public and private sector is usually:

A) A hearing before the NLRB
B) Mediation by the Federal Mediation and Conciliation Service
C) A unilateral decision by management
D) Final and binding arbitration