Sheet metal forming involves application of tensile or shear forces predominantly. Working upon sheets, plates and strips mainly constitutes sheet forming. Sheet metal operations are mostly carried out in presses-hydraulic or pneumatic. A set of tools called die and punch are used for the sheet working operations.

Blanking : Blanking refers to the removal of a piece of work of suitable dimension from a workpiece.

Piercing : Piercing refers to the operation of piercing a hole from a workpiece.

Hence, the correct option is (B).