$4.$ Given the security levels TOPSECRET, SECRET, CONFIDENTIAL, and UNCLASSIFIED, and the categories A$,$ B$,$ and C$,$ what type of access $($read$,$ write, or both$)$ is allowed in the following situations.

a$.$ Paul, cleared for $($TOPSECRET$,($A$,$C$\}),$ wants to access a document classified as $($SECRET$,($B$,$C$)).$

$2$ points

b$.$ Anna, cleared for $($CONFIDENTIAL$,($C$\}),$ wants to access a document classified as $($CONFIDENTIAL$,($B$)).$

$2$ points

e$.$ Jesse, cleared for $($SECRET$,($C$)),$ wants to access a document classified as $($CONFIDENTIAL$.($C$)).$

$2$ points

d$.$ Sammi, cleared for $($TOPSECRET$.($A$,$C$)),$ wants to access a document classified as $($CONFIDENTIAL $($A$\}).$

$2$ points

Robin, who has no clearances, wants to access a document clasified as $($CONFIDENTIAL$,($B$)).$

$2$ points