One mole of $H_{2}O$ means:
$(i)$ $18 \text{ g}$ of $H_{2}O$
$(ii)$ $6.022 \times 10^{23}$ molecules of $H_{2}O$
$(iii)$ $180 \text{ g}$ of $H_{2}O$
$(iv)$ $1.8 \text{ g}$ of $H_{2}O$

• A
  Both $(ii)$ and $(iii)$ are correct
• B
  Only $(i)$ is correct
• C
  Both $(iii)$ and $(iv)$ are correct
• D
  Both $(i)$ and $(ii)$ are correct