Q. In R, how is a matrix created using the matrix() function?

• (A) matrix(1:9, nrow = 3, ncol = 3)
• (B) create.matrix(1:9, rows = 3, columns = 3)
• (C) [1, 2, 3; 4, 5, 6; 7, 8, 9]
• (D) mat(1:9, 3, 3)