Which of the following will most likely harm a multinational enterprise's (MNE's) reputation?

a. Principal-agent problems cause an MNE to merge with another MNE.

b. A sweatshop owned by an MNE has an explosion that kills hundreds of workers.

c. Increased competition causes an MNE to close a factory in a developing country.

d. Wages for workers in a factory owned by an MNE increase, causing profits to decline.