Marta, 32 years old, single, gives us the following information about some of her income obtained during this fiscal year.

She received dividends from the shares of a pharmaceutical company, being the gross amount 800 and the withholding taxes 152 .

The 20th of May she sold 520 shares of an oil company at the price of 44 per share. Her portfolio of these shares was acquired in the following terms:

Date of purchase	N of shares	Price per share
10/01/2016	380	16
19/04/2012	240	53

We ask: To work out possible sources of income and explain its relevance in the Personal Income Tax return of Marta.