Subject: mathqa
Question: 3 distinct single digit no a , b , c are in g . p . if abs ( x ) for real x is the absolute value of x ( x if x is positive or zero , and x if x is negative ) , then the no . of different possible values of abs ( a + b - c ) is
Option: 
A: 6
B: 4
C: 5
D: 2
Answer: C