Assume the same scenario and facts for Makenzi's Books outlined above.

Which of the following items could represent an operational risk at Makenzi's Books?

Note: multiple answers are possible.

Group of answer choices

a. The production of a series of textbooks with incorrect factual information

b. Incorrect code inserted into one of the educational simulations

c. The threat by a competitor to execute a takeover of MBs

d. Higher than expected inflation rate.