Skin patches chronically exposed to sunlight compares with skin that is normally protected from the sun as having up to ten times more cancer-causing genemutations .
(A) compares with skin that is normally protected from the sun as having up to ten times more cancer-causing gene mutations
(B) ,as opposed to skin that is normally protected from the sun, has up to ten times more cancer-causing gene mutations
(C) ,compared with skin that is normally protected from the sun, has up to ten times more
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(A) compares with skin that is normally protected from the sun as having up to ten times more cancer-causing gene mutations
(B) ,as opposed to skin that is normally protected from the sun, has up to ten times more cancer-causing gene mutations
(C) ,compared with skin that is normally protected from the sun, has up to ten times more
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