Which of the following cell organelles is present in the highest number in secretory cells?

Consider the given two statements:
I. Cytoplasmic streaming is more important in plant and algal cells than in animal cells
II. Plant and algae cells are generally larger than animal cells

1. Both I and II are correct and II explains I
2. Both I and are correct but II does not explain I
3. I is correct and II is incorrect
4. Both I and II are incorrect