Answer:
A is correct here
Step-by-step explanation:
Participle : it has its head the present and past participle forms of a verb, it doesn't function as a verbal entity, rather it functions as modifier of a nominal entity.
in using it, you need to ensure that it comes immediately before the entity it modifies. in alternative, it could come immediately after the entity which it modifies; when used in this way, comma must be used to mark it out.
Gerundive : This is a verb that is used as a noun it is also called a verbal noun, this implies that verbs can also function as nouns.