When magnified 1,000 times by an electron microscope, the image of a certain circular piece of tissue has a diameter of 0.3 centimeter. The actual diameter of the tissue, in centimeters, is
Choose the correct option:
A) 0.005	B) 0.002	C) 0.001	D) 0.0003	E) 0.0002

Rationale: "it is very easy if x is the diameter , then the magnified length is 1000 x . ince 1000 x = 0.3 then x = 0.3 / 1000 = 0.0003 . the answer is d"
Answer: D