A recent study by an economist working for Oceanic Airlines shows that income elasticity of demand for a plane ticket from Los Angeles to Sidney is eQ;I = 1:2. Jack Shephard is a regular passenger of Oceanic Airlines, who ies from Los Angeles to Sidney 50 times a year. As a response to 10% increase in his income, Jack is expected to y from Los Angeles to Sidney

(a) 50 times a year.

(b) 47 times a year.

(c) 60 times a year.

(d) 53 times a year.

(e) 56 times a year.