Indicate whether each of the following descriptions better applies to the scanning (S) or transmission (T) electron microscopy techniques. Your answer would be a four-letter string composed of letters S and T only, e.g. TSTS.
( ) It generally has a greater depth of field.
( ) It is usually smaller, cheaper, and simpler.
( ) It detects electrons that are scattered or emitted from the specimen.
( ) It is used to create electron-microscope tomograms.