Which of the Following Terms Describe the Current Era of Operations

Which of the following terms describe the current era of operations?
i. Mass Customization
ii. Flexible Specialization
Iii. Lean
iv. Agile
v. Strategic

A) i ii, and iv
B) ii, iii, iv, and v
C) i, ii, iii, and iv
D) All of the above
E) None of the above