Right option is (a) True
The explanation is: The given statement is true. When the finish molding is complete, the plunger is retracted and air blown in from the bottom of the mold, enlarging the size of the bubble until the glass is pressed out against the blank mold to form a hollow, thick-walled preform or parison. The parison is then inverted and transferred to the blow mold. It elongates there as a result of its own weight and touches the base of the mold.