It is important to make small check dams across the flooded gullies because they
$(i)$ hold water for irrigation
$(ii)$ hold water and prevent soil erosion
$(iii)$ recharge groundwater
$(iv)$ hold water permanently

• A
  $(ii)$ and $(iii)$
• B
  $(i)$ and $(iv)$
• C
  $(iii)$ and $(iv)$
• D
  $(ii)$ and $(iv)$