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Subtract Union of Set Minus Intersection of Set

GMAT-YGE6YW

Set $K$ consists of numbers ${1, 2, 3, 10}$. Set $S$ consists of numbers ${2, 4, 6, 10}$. If you add the numbers in the union of the sets, and subtract the numbers in the intersection of the sets, what value do you have?

A

$26$

B

$14$

C

$12$

D

$10$

E

$2$