Which of the following statements is true about North American Datum (NAD)?
A. NAD83 is a newer datum than NAD27.
B. Maps based on NAD83 can register spatially with maps based on NAD27.
C. NAD83 is based on a satellite-determined spheroid.
D. All of these are correct
E. Both NAD83 is newer and NAD83 is based on.
Answer: E
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a. true b. false