First price-quantity point (=(42,870)), Second price-quantity point (=(57,760)). Find the elasticity for the given pair of points: State which price-point increases revenue (in the format ((x,y))).
a) Elasticity = 2.03; Second price-point increases revenue
b) Elasticity = 2.03; First price-point increases revenue
c) Elasticity = 0.49; First price-point increases revenue
d) Elasticity = 0.49; Second price-point increases revenue