📊 R Programming
Q. What will be the output of the following R code?
> x <- list(a = matrix(1:4, 2, 2), b = matrix(1:6, 3, 2))
> lapply(x, function(elt) { elt[,1] })
  • (A) $a [1] 1 2 $b [1] 1 2 3
  • (B) $a [1] 1 2 3 $b [1] 1 2 3
  • (C) $a [1] 1 2 3 $b [1] 1 2
  • (D) Error
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✅ Correct Answer: (A) $a [1] 1 2 $b [1] 1 2 3

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