Given below are four jumbled sentences. Select the option that gives their correct order.
(1) People can get infected by handling reptiles and then touching their mouths or an open cut.
(2) At first, they look the perfect pets: exotic, quiet and tidy.
(3) A study estimates that in 1995, there were as many as 6,700 reptile-caused salmonella infections.
(4) But lizards and other pets can harbour a salmonella bacterium that makes people sick.