Which quotation is a statement of fact, and not an opinion?
A. "We may be captivated by the thought of organisms on another planet, but we seem to have lost interest in our own"
B. "Our desire for exotic fish rips through a world scarcely better known to us than the red planet's surface"
C. "Every year, clever new ways of wasting stuff are devised"
D. "The richer a country becomes, the less its people care about their impacts on the living planet"
E. "Martian scientists continue their search for intelligent life on Earth"