ll has a dataset called $$grades$.$dta$$ saved in a folder on her desktop. She launches Stata and immediately enters the command $$use grades$$ to load the dataset into memory but gets an r$(601)$ error. What went wrong?

a$.$

Jill$$s dataset isn$$t in Stata format

b$.$

Jill should have used the command 'load grades $\text{'}$

c$.$

Jill forgot to change the working directory to the folder on her desktop

d$.$

Jill didn$$t include the file$$s extension in the command