If |z(1) -1|le1,|z(2) -2| le2,|z(3) - 3|...

If `|z_(1) -1|le1,|z_(2) -2| le2,|z_(3) - 3|le 3,` then find the greatest value of `|z_(1) + z_(2) + z_(3)|`

A

6

B

12

C

17

D

23

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