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

Multiple Choice

Your professor tells you,"If you don't start with reliable data,you'll end up with unreliable results." You interpret this to mean which of the following?

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.