Answer the following question given this paragraph: 

Giant elliptical galaxies contain over a trillion stars. Elliptical galaxies are red to yellow in color because they contain mostly old stars. Most contain very little gas and dust because the material has already formed into stars.


Q: Which type of galaxies contain very little gas and dust, are red to yellow in color, contain over a trillion stars and have mostly old stars?

 Choices:

- blue elliptical galaxies

- giant orbital galaxies

- giant gaseous galaxies​

- giant elliptical galaxies

A:
giant elliptical galaxies
