Creating a new variable using dplyr in R using lists

So let's say we have three lists.

list_A <- c("PA","MA","MD")
list_B <- c("NJ","NY","OK")
list_C <- c("AZ","MT","LA")

I have a dataframe like this

ID        presenter          state   
1         Donatello   c("AZ","NY")
2          Leonardo             NJ
3            Rafael   c("LA","MT")
4     Michaelangelo    c("PA,"LA")

I want to use the tidyverse to create three new vars which count how many times state contains an element of their list for each row.

ID        presenter          state     A   B   C   
1         Donatello   c("AZ","NY")     0   1   1
2          Leonardo             NJ     0   1   0
3            Rafael   c("LA","MT")     0   0   2
4     Michaelangelo   c("PA","LA")     1   0   1

Unrelated but related, but out of curiousity, is it possible to unlist() the state but make more rows with the old info, so manipulating df1...

ID        presenter          state   
1         Donatello             AZ
1         Donatello             NY
2          Leonardo             NJ
3            Rafael             LA
3            Rafael             MT
4     Michaelangelo             PA
4     Michaelangelo             LA