What is the empirical formula of ascorbic acid (vitamin C), which is 40.91 % C, 4.57% H, and 54.50% O?

Which of these is an example of pseudoscience? a) predicting the time of sunrise based on data on position of earth b) predicting the date of the moon phases based on data on position of earth c) predicting eclipses based on the position of the sun and the moon d) predicting future events in a person's life based on the position of the moon