The correct option is the first one "Codominance", since both alleles are expressing at the same time.
When i observe internal parts of plants , i feel that its structure and functions are very complex and dependent from one another
If one part of the plants fail to do its function, it will be most likely that other parts of the plants will be disturbed too
hope this helps
the answer your looking for is D
Hope this helps this is what I used when I studied this