With reference to 'Astrosat',' the astronomical observatory launched by India, which of the following statements is/are correct?

a. AstroSat is the first dedicated Indian astronomy mission aimed at studying celestial sources in X-ray, optical and UV spectral bands simultaneously.

b. It is a multi-institute collaborative project, involving NASA, ISRO, JAXA and European Space Agency.

Select the correct answer using the code given below.