Question: Which of the following commands will transform vector x

Which of the following commands will transform vector x<-c(1,2,3,4) into a 2x2 matrix in R? (There might be more than 1 answer)

  1. (a) x <- matrix(x,ncol=2)
  2. (b) dim(x) <-c(2,2)
  3. (c) x <- matrix(x, 2*2)
  4. (d) dim(x) <-[2,2]
  5. (e) x <- matrix(x, diag=T)

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