The strictures of the Neoclassical Rules were broken once and for all by

What is the name for the opening formal section of the first movement of Mozart's Piano Concerto in A Major, K. 488?

a. Introductory Episode b. Tutti Exposition c. Solo Exposition d. Solo Episode

What is the difference between these two music examples. The second is

a. in major b. in minor c. slower d. louder