When Applying for a student visa F1 should I show financial proof to pay for the 4 years 200k or 1 year? -

I have my visa interview in a two weeks, and the Tuition for 1 year is 34k . When I go to the interview should I show proof that I am able to pay for the 4 years or only 1 year? THANKS

if you rich 4 if cannot 1