WTP is respondents' willingness-to-pay for a digital camera (in dollar value). SAT is respondents" satisfaction towards the brand of the digital camera (rated from 1 [very unsatisfied] to 10 [very satisfied]), and SEX is respondents' gender (value = 0 if female, 1 if male). We have established a regression equation as follows: WTP = 200 + 10 x SAT + 2 x SEX X SAT + s Which of the following statements is correct? Select one: 3. The increase of 1 rating in satisfaction leads to an increase of $12 in WTP b. Male respondents have higher WTP for the digital camera than female respondents c. The transformation from satisfaction to WTP is easier for male respondents d. None of the listed statements is correct