A theorem states that between any two rational numbers on a number line there exists an infinite number of rational numbers the formula below can be used in a proof of the theorem in the a, b, and c represent rational numbers c = a b/2 which of these is an equivalent formula rewritten for a in terms of b and c
A. a = 2c/b
B. a = 2bc
C. a = c/b
D. a = b/c