The basic conjoint analysis model expressing the fundamental relationship between attributes and utility in conjoint analysis is shown below:

U(X) = ijXij

What does ki represent?

A) 1 if the jth level of the ith attribute is present, or 0 otherwise
B) the part-worth contribution or utility associated with jth level (j, j=1, 2, ...ki) of the ith attribute (i, i=1, 2, ...m)
C) number of attributes
D) number of levels of attribute i

D