Which of the following code extracts 1st element of the 2nd element?
> x <- list(a = list(10, 12, 14), b = c(3.14, 2.81))
> x <- list(a = list(10, 12, 14), b = c(3.14, 2.81))A. x[[c(2, 1)]]
B. x[[c(1, 2)]]
C. x[[c(2, 1,1)]]
D. x[[(2, 2,1)]]
Answer: Option A
This Question Belongs to R Programming >> Data Structures In R Programming
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