Select the base$$ system$($s$)$ for which the following statement is true.

$11$ is a prime number in this system.

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Part $1$

Select all that apply.

A$.$

$$Base$-$five system

B$.$

Hexadecimal system

C$.$

$$Base$-$seven system

D$.$

Decimal system

E$.$

Binary system

F$.$

Octal system