We usually say, "I'll help you write the report." (A)
But sometimes I also heard "I'll help you to write the report." (B)
Based on my guess, I give four statements here. Can you please tell me which one is right? Or none of them is right?
1. (A) is correct and (B) is not. We can only hear (B) from ESLs.
2. They are both correct and have exactly the same meanings.
3. They are both correct but have different meanings.
4. They are both correct but (B) is becoming obsolete.
Thanks in advance.
However, most native speakers omit that preposition most of the time, and it does sound a little odd if you don't display a great many 'authentic native' markers in your speech.