I recently filled out the TSP form and decided to put all 10% of my pay in the C-fund. My reasoning for doing this is that I was shown how the different funds did in the past 10 years. The C-fund led at just about 12%. Is this a good idea to put all my eggs in one basket so to speak, or should I diversify my pay into all the funds? (I am a brand new 2nd Lt, planning to be in for 12 years.) Thanks