Of the Disaster Scales Discussed in the Book (Richter,Modified Mercalli,Fujita,Saffir-Simpson)

Of the disaster scales discussed in the book (Richter,Modified Mercalli,Fujita,Saffir-Simpson)

A) all use larger numbers to describe larger disasters.
B) all use smaller numbers to describe larger disasters.
C) some use smaller numbers and some use larger numbers to describe larger disasters.
D) some use alphabetic abbreviations and some use numbers to denote the size of disasters.