Which statement is true?

A. All participles end in -ing, but not all words ending in -ing are participles.
B. All words ending in -ing are gerunds, but not all gerunds end in -ing.
C. All gerunds end in -ing, but not all words ending in -ing are gerunds.
D. All words ending in -ing are participles, but not all participles end in -ing.

Question

Which statement is true?

 		A.	All participles end in -ing, but not all words ending in -ing are participles.
 		B.	All words ending in -ing are gerunds, but not all gerunds end in -ing.
 		C.	All gerunds end in -ing, but not all words ending in -ing are gerunds.
 		D.	All words ending in -ing are participles, but not all participles end in -ing.

jagatuba · Answer

I'll give you some hints and I bet you can figure out the answer on your own.

Hint #1: There are two types of participles, present and past.
Hint #2: Gerunds only have one conjugated form.
Hint #3: Thing is not a participle or gerund.
Hint #4: Herring is not a gerund or a participle.

With those hints you should be able to figure out the answer by process of elimination.