Which statement about the Islamic Golden Age is
 a fact rather than an opinion?
 (1) Islamic medicine was more advanced than
 Chinese medicine.
 (2) Poetry and literature were more important
 fields of study for Muslims than was
 mathematics.
 (3) Knowledge of astronomy was used by
 Muslims to fulfill religious obligations.
 (4) Islamic philosophies relied less on Greek
 philosophical masters than on Indian
 philosophical masters.