x is required; if you do not specify it$,$ R will throw an error. trim and na$.$rm are optional arguments: they have a default value which is used if the arguments are not explicitly specified.

Which of the following statements about the read.table$()$ function are true?

header, sep and quote are all optional arguments.

row.names and fileEncoding don't have default values.

read.table$("$myfile$.$txt$","-",$ TRUE$)$ will throw an error.

read.table$("$myfile$.$txt$",$ sep $="-",$ header $=$ TRUE$)$ will throw an error.

Instructions

$50$ XP

Possible answers

$(1)$ and $(3)$

$(2)$ and $(4)$

$(1),(2),$ and $(3)$

$(1),(2),$ and $(4)$