which are correct rectangular array declaration in c, Arrays, C#.NET

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Question:Which are correct rectangular array declaration in C#?

A in[,] matrix=new int[3,3]; 
B var matrix=new int[,]{
  {0,1,2},
  {3,4,5},
  {6,7,8}
}; 
C int [][] matrix=new int[3][]; 
D int[,] matrix={
  {0,1,2},
  {3,4,5},
  {6,7,8}
};

+ AnswerA B D

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Question:Which are correct rectangular array declaration in C#?

A in[,] matrix=new int[3,3];

B var matrix=new int[,]{ {0,1,2}, {3,4,5}, {6,7,8} };

C int [][] matrix=new int[3][];

D int[,] matrix={ {0,1,2}, {3,4,5}, {6,7,8} };

A B D