Consider relations Reader$($memberid$,$name$)$; Book$($isbn$,$author,title$)$; and Borrow$($memberid$,$isbn,date$).$ From the following expressions $($relational algebra or SQL$),$ indicate those that correctly express the query "list the names of readers who have borrowed a book by Trump". $($In relational algebra we use project to indicate projections and sigma to indicate selections.$)$

relational algebra: sigma$[$author$=$'Trump'$]($Borrow$)$

relational algebra: project$[$name$]($Reader natural$-$join select$[$author$=$'Trump'$]($Book$)$ natural$-$join Borrow$)$

SQL:

select name from Reader natural join Borrow

where author$=$'Trump'

relational algebra: project$[$name$]($sigma$[$author$=$'Trump'$]($Reader natural$-$join Book natural$-$join Borrow$))$

SQL:

select name from Reader,Book,Borrow where

Reader.memberid$=$Borrow.memberid and Book.isbn$=$Borrow.isbn and Book.author$=$'Trump'

SQL: select $*$ from Reader where Book.author$=$'Trump