Which of the following statement is wrong?
a. Polar stratospheric clouds (PSCs) are clouds formed over Antarctica
b. Acid rain dissolves heavy metals such as Cu, Pb, Hg and Al from soil, rocks and sediments.
c. H2SO4 is major contributor to acid rain, HNO3 ranks second and HCl third in this respect
d. Fishes grow as well in warm as in cold water