Consider the suppliers$-$parts database with tables S$,$P$,$SP$.$ Recall SP$[$sno$]$ is a FK to S$[$sno$]$ and SP$[$pno$]$ is a FK to P$[$pno$].$ Suppose that all three tables are stored as unordered files, and we have no available indexes. Check below all the correct statements. Assume the cost estimates discussed in the lecture. Also, assume that there is nothing in main memory that would store information about the database before each query besides the T object discussed in the lecture. Question $1$ options:

If S has $30$ blocks then the cost of select $*$ from S where city$=$"Rome' is at most $30$da

If S has $30$ blocks then the cost of select $*$ from S where city$=$"Rome' is at most $2$da

If SP has $100$ blocks then the cost of delete from SP where pno$=350$ is at most $100$da

If S has $30$ blocks then the cost of select $*$ from S where city$=$"Rome' is at most $15$da

If SP has $100$ blocks then the cost of delete from SP where pno$=350$ is at least $100$da

If S has $100$ blocks then the cost of delete from S where sno$=150$ is at most $100$da