Sentence Correction (SC) | When the volunteers arrived at the concert, they were given the choice

When the volunteers arrived at the concert, they were given the choice of to either work in concessions or cleaning up after the event.

a) they were given the choice of to either work
b) a choice was given them of either working
c) they had the choice of to work
d) giving them the choice of either to work
e) they had the choice of either working

Source : GMAT Club Grammar Book

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