Simplify this expression using the Quotient Rule of Integer Exponents: t^400/t^100

A. t^4
B. t^500
C. t^300
D. 300

Using the Quotient Rule of Integer Exponents, we subtract the exponents:

t^400/t^100 = t^(400-100) = t^300

So, the simplified expression is t^300.

Therefore, the correct answer is C. t^300.