Question

Which one of the following statements accurately reflects a rule for the use of abbreviations?

A. The symbol "$" may stand alone in a sentence, because it's a familiar symbol.
B. The abbreviation "B.C." should be associated with a number, such as 44 B.C.
C. The abbreviation "Ph.D." may be written only in conjunction with a proper name.
D. The abbreviations "p.m." and "P.M. can be used interchangeably within a document.

Answer 1

B. The abbreviation "B.C." should be associated with a number, such as 44 B.C.

Answer 2

The correct answer is B.  The two capital letters B and C used in this manner B.C.  is the abbreviation of the words Before Christ, and it's used to refer to a year before Jesus Christ was born. The rule for the use of this abbreviation is that it should be associated with a number. For example: 44 B.C. refers  to an event occured 44 years before Christ.