Consider the following code. What range of values can each variable $($a$,$ b$,$ c$,$ d$,$ and e$)$ have? Specify ranges with a dash i$.$e$."1-10"$ and separate multiple numbers with commas i$.$e$."1,2,3,4,5,$etc..."

Random rand $=$ new Random$()$;

int a $=$ rand.nextInt$(100)$;

int b $=$ rand.nextInt$(20)+50$;

int c $=$ rand.nextInt$(20+50)$;

int d $=$ rand.nextInt$(100)-20$;

int e $=$ rand.nextInt$(10)*4$;