Examine the following R code we used in class to merge two files while learning about database management.

## Import file $1$ of the relational database

Patient$\_$Disease$\_$File$1=$ read.csv$($file$.$choose$())$

## Import file $2$ of the relational database

Disease$\_$GenomeRegion$\_$File$2=$ read.csv$($file$.$choose$())$

## Make a new file by merging Files $1$ and $2$ using the shared column "Disease"

joined$\_$file$=$full$\_$join$($Patient$\_$Disease$\_$File$1,$ Disease$\_$GenomeRegion$\_$File$2,$ by $=$ "Disease"$)$

# Here is how your first file looks like. It has $4$ rows P$1$ through P$4$ and $2$ columns named Patient and Disease.

Patient$\_$Disease$\_$File$1$

Patient Disease

$1$ P$1$ Angelman$\backslash$xd$5$s syndrome

$2$ P$2$ Angelman$\backslash$xd$5$s syndrome

$3$ P$3$ Breast Cancer

$4$ P$4$ Breast Cancer

# Here is how your second file looks like. It has $2$ rows, one for Angelman$/$Xd$5$s syndrome and one for breast cancer and $2$ columns called Disease and Affected genomic region.

Disease Affected.genomic.region

$1$ Angelman$\backslash$xd$5$s syndrome Chromosome $15$

$2$ Breast Cancer BRCA$1$ The dimension of first

What will be the dimensions of the file you created using the function full$\_$join$()?$