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If the system of linear equations 7x+11y...

If the system of linear equations
`7x+11y+alphaz=13`
`5x+4y+7z=beta`
`175x+194y +57z= 361`
has infinitely many solutions, then `alpha + beta + 2` is equal to:

A

6

B

4

C

3

D

5

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