$3.$ Data Subset

$($a$)$ Subset data D$1$ with respect to the condition that column $$time$$ is equal to

$$Dinner$.$ Name the derived data frame as D$2.$

$($b$)$ Remove data set D$2$ using rm$().$

$($c$)$ Subset data D$1$ with respect to the condition that column $$size$$ is greater than $2$ and column

$$smoker$$ is $$No$.$ Name the derived data frame as D$3.$

$($d$)$ Subset data D$1$ with respect to the condition that column $$tip$$ is greater than $4$ or column

$$size$$ is less than $5.$ Name the derived data frame as D$4.$

$($e$)$ Bind $($merge$)$ D$3$ and D$4$ and name the new dataset D$5$