How much information is given to testers during black box testing?

Question $3$Select one:

a$.$

Testers are given the same knowledge as developers in regards to the code.

b$.$

Testers are given the application in its entirety to test the functionality.

c$.$

Testers are given the same knowledge that an employee would know.

d$.$

Testers are given no more information than any hacker may have.