John bought a 1-year, $30,000 certificate of deposit that paid interest at an annual rate of 10 percent compounded semiannually. What was the total amount of interest paid on this certificate at maturity? Choose the correct choice from the following answers:
A) $3175  B) $3275  C) $3075  D) $3375  E) $3500
10 percent compounded semiannually --&gt; 5% in 6 moths.   For the first 6 moths interest was 5% of $30,000, so $1500;   For the next 6 moths interest was 5% of $31,500, so $1575   Total interest for 1 year was $1500+$1575=$3075   Answer : $3075  1500+ 1575= 
<gadget id="calculator">  1500+ 1575</gadget>
<output>3_075</output>
$3075   Answer : $3075
<result>C</result>
John bought a 1-year, $30,000 certificate of deposit that paid interest at an annual rate of 10 percent compounded semiannually. What was the total amount of interest paid on this certificate at maturity?