Lykke's supervisor is evaluating whether to use internal security employees to conduct a penetration test. Lykke does not consider this a good idea and has created a memo with several reasons they should not be used. Which of the following would NOT be part of that memo?

a$.$ Employees may have a reluctance to reveal a vulnerability.

b$.$ There may be a lack of expertise.

c$.$ The employees could have inside knowledge of the network that would give them an advantage.

d$.$ They would have to stay overnight to perform the test.