Millions of identical copies of a plant can be produced

[BTGmoderatorDC]

Millions of identical copies of a plant can be produced using new tissue-culture and cloning techniques.
If plant propagation by such methods in laboratories proves economical, each of the following, if true, represents a benefit of the new techniques to farmers EXCEPT:

(A) The techniques allow the development of superior strains to take place more rapidly, requiring fewer generations of plants grown to maturity.
(B) It is less difficult to care for plants that will grow at rates that do not vary widely.
(C) Plant diseases and pests, once they take hold, spread more rapidly among genetically uniform plants than among those with genetic variations.
(D) Mechanical harvesting of crops is less difficult if plants are more uniform in size.
(E) Special genetic traits can more easily be introduced into plant strains with the use of the new techniques.

[deloitte247]

Option A - INCORRECT.
This option is in support of the assumption which is, the techniques allows the development of superior strains more rapidly since they are identical copies of plant.

Option B - INCORRECT.
It is less difficult to care for plants that will grow at rates that do not vary widely, since they are millions of identical copies of a plant produced at the same time using this new techniques.

Option C - CORRECT.
This option is an exceptional among all other options in this reasoning. Meanwhile, the discussion is about a new Technic proposed to be used for mass production by a method of tissue-culture and cloning Technics. However, this option has deviated from the basis of the discussion by talking about plant diseases and pest control.

Option D - INCORRECT.
This option is talking about easy harvesting of crops produced by this Technic and its easy nature of harvesting compared to the old method of planting and harvesting.

Option E - INCORRECT.
Obviously, plants produced with this new Technics will have same specific genetic traits.