An economic consultant for X Corp. recently provided the firm's marketing manager with this estimate of the demand function for the firm's product:

Qx = 120 - 5.0Px + 2.0Py + 0.25M +1.0Ax

where Qx represents the amount consumed of good X, Px is the price of good X, Py is the price of good Y, M is income, and Ax represents the amount of advertising spent on good X. Suppose good X sells for Rs300 per unit, good Y sells for Rs250 per unit, the company utilises 2,000 units of advertising, and consumer income is Rs10,000.

Calculate the price elasticity, income elasticity, cross-elasticity and advertising elasticity of demand for product X and interpret your results.