When Entering the Number $1 / 3$ Into a Three Digit Base Ten Calculator, the Round-Off Error

Multiple Choice

When entering the number $1 / 3$ into a three digit base ten calculator, the round-off error is

A) $1 / 30$
B) $1 / 300$
C) $1 / 3000$
D) $0.003$
E) $0.0003$