Which of the Following Sets of Four Arguments Supports Making

Which of the following sets of four arguments supports making component parts in-house (i.e. vertical integration) ?

A) It lowers costs, facilitates investments in highly specialised assets, protects proprietary product technology and facilitates the scheduling of adjacent processes.
B) It facilitates greater flexibility, helps the firm to capture orders from international customers, facilitates investments in highly standardised assets and facilitates the scheduling of adjacent processes.
C) It helps the firm to capture orders from international customers, lowers costs, facilitates investments in highly standardised assets and facilitates the scheduling of adjacent processes.
D) It lowers costs, and it facilitates greater flexibility, the scheduling of adjacent customers and investments in highly specialised assets.