Subtract. Put your answer in lowest terms.
Start Fraction 17 over 20 End Fraction minus Start Fraction 1 over 2 End Fraction
A. Start Fraction 11 over 20 End Fraction
B. Start Fraction 3 over 20 End Fraction
C. Start Fraction 7 over 20 End Fraction
D. Start Fraction 16 over 18 End Fraction