What is the Difference between struct and class in terms of Access Modifier?

• A. a. By default all the struct members are private while by default class members are public.
• B. b. By default all the struct members are protected while by default class members are private.
• C. c. By default all the struct members are public while by default class members are private.
• D. d. By default all the struct members are public while by default class members are protected.