Q. What will be the output of the following R code?
> x <- list(a = 1:5, b = rnorm(10))
> lapply(x, mean)

• (A) $a [1] 3 $b [1] 0.1322028
• (B) $a [1] 4 $b [1] 0.1322028
• (C) $a [1] 5 $b [1] 0.1322028
• (D) $a [2] 5 $b [1] 3