A 4 year old boy is brought in by his mother after she discovers that his urine is now a dark coca-cola color. She reports that he was at the doctor 10 days ago because he was complaining of a sore throat, but he has otherwise been well. What is the most likely diagnosis?
a. Alport's syndrome
b. Goodpasture's syndrome
c. Henoch-Schonlein purpura
d. Minimal change disease
e. Post-streptococcal glomerulonephritis