Q. What will be the output of the following R code?
> x <- matrix(1:6, 2, 3)
> x[1, , drop = FALSE]

• (A) [,1] [,2] [,3] [1,] 1 3 5
• (B) [,1] [,2] [,3] [1,] 2 3 5
• (C) [,1] [,2] [,3] [1,] 1 2 5
• (D) Error