In a division sum, the remainder is 0. A student mistook the divisor by 12 instead of 21 and obtained 35 as quotient.What is the correct quotient ?  Choose the correct choice from the following answers
A) 13  B) 16  C) 18  D) 20  E) 22
Number =(12*35)=270.   correct quotient =420/21= 
<gadget id="calculator">420/21</gadget>
<output>20</output>
20.   Answer is 20
<result>D</result>
In a division sum, the remainder is 0. A student mistook the divisor by 12 instead of 21 and obtained 35 as quotient.What is the correct quotient ?