Task: Question Answering
Input (English): Problem: the mark up between ` ` normal plan ' ' price and ` ` premium plan ' ' price is 30 percent of the ` ` normal plan ' ' price. the markup is what percent of the ` ` premium plan ' ' price ? ( markup = difference between normal and premium price plans )
Options: a. 8 %, b. 20 %, c. 33 1 / 3 %, d. 45 %, e. 56 2 / 3 %
Output (English): c