FIGURE Q$2$ shows the dataframe named as dfgrade, that contains marks and details of students.

$\backslash$table$[[$name$,$id$,,$programme,coursework,exam$],[$Carrol$,1111,$BIS,$40\mathrm{.}1,38,],[$Mike$,1112,$BIT,$38\mathrm{.}7,43,],[$John$,1113,$BIT,$39\mathrm{.}0,42,],[$Chew$,1114,$BIT,$42\mathrm{.}5,39,],[$Hafis$,1115,$BIS,$38\mathrm{.}0,39,]]$

FIGURE Q$2$: dfgrade dataframe

i$.$ Based on the dfgrade dataframe, determine the output of the following code snippets:

dfgrade$[2]$

dfgrade$[2,]$

dfgrade$[$c$(1,4),]$

dfgrade$coursework