What is right way to Initialization array?

• A. int num[6] = { 2, 4, 12, 5, 45, 5 } ;
• B. int n{} = { 2, 4, 12, 5, 45, 5 } ;
• C. int n{6} = { 2, 4, 12 } ;
• D. int n(6) = { 2, 4, 12, 5, 45, 5 } ;