19) C

330ml contains 9 lumps of sugar.
Multiples of 330 = 330, 660, 990, 1320, 1650, 1980, 2310

2 litres = 2000 ml ≈ 1980 ml
1980 ÷ 330 = 6 sets of 9 lumps of sugar

Lumps of sugar in 2 litre bottles = 6 x 9 = 54

Hence the answer is C.

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