In a popular song from 1970, the musical group crosby, stills, and nash us the line "we are stardust" Why is this statement true?

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current

i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year

it would be a gas formation