Robert Campin's Merode Altarpiece shows this in the center panel:

The Spanish have referred to the __________ century as the siglo de oro

A) sixteenth B) fourteenth C) seventeenth D) fifteenth E) none of the above

Which statement best describes the cadenza?

a) they appear only in the first movement and were never improvised b) they appear only in the second movement and may or may not have been improvised c) they can appear in every movement, particularly the first, were expected to be (or at least appear to be) moments of intense improvisation d) they appear only in the third movement and were always improvised