Cher's marginal rate of substitution of necklaces (N) for earrings (E) is 5 (MRSEN = 5).
This information implies that:
A. Cher should own 5 times as many necklaces as pairs of earrings.
B. The slope of the indifference curve is 5 and thus upward sloping.
C. Cher will move to a higher indifference curve if she trades away 5 necklaces for one more pair of earrings.
D. Cher is willing to trade away 5 necklaces for one more pair of earrings, holding her utility constant.