Direction: In the given question a sentence is divided into five parts out of which the last part is correct. Out of the remaining four, there are errors in three parts. Choose the part that doesn't have an error. If all the four parts are correct, mark option 5 i.e. All are correct as the answer.

The surface of vessels may be spangled (A) with gold or platinum by rolling the (B) hot glass on a metallic leaf, or iridescent, (C) by the deposition of metallic tin, or by the (D) corrosion caused by the chemical action of acid fumes.