What will be the output of the following R code?

> x <- list(1, "a", TRUE, 1 + 4i)
> x

A.

[[1]]
[1] 1
 
[[2]]
[1] "a"
 
[[3]]
[1] TRUE
 
[[4]]
[1] 1+4i

B.

[[1]]
[1] 2
 
[[2]]
[1] "b"
 
[[3]]
[1] TRUE
 
[[4]]
[1] 1+4i

C.

[[1]]
[1] 3
 
[[2]]
[1] "a"
 
[[3]]
[1] TRUE
 
[[4]]
[1] 1+4i

D.

[[1]]
[1] 77
 
[[2]]
[1] "a"
 
[[3]]
[1] False
 
[[4]]
[1] 1+5i

Answer: Option A