What are complementary hexachords? A) when one hexachord is a ...

[jman1234]

What are complementary hexachords?
 
  A) when one hexachord is a retrograde of the other
  B) when neither hexachord shares the same note
  C) when three notes of one hexachord also appear in the other hexachord
  D) when the pitch order of each hexachord forms thirds or fifths with the pitch order of the second hexachord

Question 2

By the early thirteenth century, the rhythmic modes had evolved into a system of ____ different patterns
 
  A) four
  B) five
  C) six
  D) eight

[ebenov]

Answer to Question 1

B

Answer to Question 2

C

[jman1234]

Excellent

[softEldritch]

Thanks for the timely response, appreciate it