For a dramatic presentation, parchment paper used for cooking en papillote should be
a. cut open at the table
b. discarded before taking it to the table
c. ignited at the table
d. shredded and used as a garnish

A. Cut open at the table

Explanation:

It should be cut open at the table to enable everybody smells the aroma.

i think it's about 10 mins.

actually i think that's wrong, but i don't know how to delete this.

but who knows it might be right.