The Range of Likely True Values of a Variable

The range of likely true values of a variable

A) may be very broad and depends on the height of the bell curve, as well as the mean.
B) may be very narrow and depends on the width of the bell curve, as well as the number of measurements made.
C) may be quite broad and depends on the height of the bell curve, as well as the number of measurements made.
D) may be quite broad and depends on the width of the bell curve, as well as the number of measurements made.
E) may be narrow and depends on the height and width of the bell curve, as well as the mean.