The shown table has two attributes A and $C$ where $A$ is the primary key and $C$ is the foreign key referencing A with on$-$delete cascade. The set of all tuples that must

additionally deleted to preserve referential integrity when the tuple $(2,4)$ is deleted is:

A C

$24$

$34$

$43$

$52$

$7,2$

$95$

Select one:

a$.(5,2)$ and $(7,2)$

b$.(5,2),(7,2)$ and $(9,5)$

c$.(3,4)$ and $(6,4)$

d$.(3,4),(4,3)$ and $(6,4)$