Match the columns
Column I Column II
(A) Phosphate fertilisers
(p) BOD level of water in water increases
(B) Methane in air
(q) Acid rain
(C) Synthetic detergents
(r) Global warming in water
(D) Nitrogen oxides in air
(s) Eutrophication
(a) \( \mathrm{A}-(\mathrm{p}, \mathrm{s}), \mathrm{B}-(\mathrm{r}), \mathrm{C}-(\mathrm{p}), \mathrm{D}- \) (q)
(b) \( \mathrm{A}-(\mathrm{p}), \mathrm{B}-(\mathrm{s}), \mathrm{C}-(\mathrm{r}), \mathrm{D}-(\mathrm{q}) \)
(c) \( \mathrm{A}-(\mathrm{s}), \mathrm{B}-(\mathrm{r}), \mathrm{C}-(\mathrm{q}), \mathrm{D}-(\mathrm{p}) \)
(d) \( \mathrm{A}-(\mathrm{p}), \mathrm{B}-(\mathrm{q}), \mathrm{C}-(\mathrm{s}), \mathrm{D}-(\mathrm{r}) \)
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