Mashaal Masha
Botanists recognize over fifty different species of sunflower. One species, the silverleaf sunflower, ________ both an early-flowering ecotype that tends to grow in coastal areas and a late-flowering ecotype that grows inland.

Which choice completes the text so that it conforms to the conventions of Standard English?
Difficulty: Easy
A: 

having included

B: 

including

C: 

to include

D: 

includes

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