Let Relation $()()12$ R A$,$B$,$C &R C$,$D$,$E have following properties $1$ R has $10000$ tuples& $2$R has $15000$ tuples where $20$ tuples of $1$ R on one block and $15$ tuples of $2$R on oneblock estimate no$.$ of blocks access required using each of the following join strategies of$12$ R &R :i$)$ Merge Join ii$)$ Hash Joiniii$)$ Block Nested Loop Join iv$)$ Nested Loop Join