A solution of pure aluminium sulphate containing $$0.170\ \text{g}$$ of aluminium ions is treated with excess of barium hydroxide solution. Total weight of the precipitate will be

A

$$0.5\ \text{g}$$

B

$$2.7\ \text{g}$$

C

$$1.7\ \text{g}$$

D

$$0.54\ \text{g}$$