What Is One Advantage That Proprietary Software Has Over Off-The-Shelf

What is one advantage that proprietary software has over off-the-shelf software?

A) Proprietary software offers better levels of customization through involvement in the development process.
B) The initial cost of proprietary software is lower.
C) Proprietary software is likely to meet the basic business needs that are common across organizations.
D) Proprietary software is likely to be of high quality because many customer firms have tested the software and helped identify its bugs.