If Your Professor Tells You, "If You Don't Start with Reliable

Multiple Choice

If your professor tells you, "If you don't start with reliable data, you'll end up with unreliable results," what does he or she mean?

A) A bird in the hand is worth two in the bush.
B) A watched pot never boils.
C) Don't cry over spilt milk.
D) Garbage in, garbage out.