If a/b = 1/2, then the numerical value of which of the following expressions cannot be determined?  Pick one:
A) 2a/b
B) (a + b)/a
C) (a + 1)/(b + 1)
D) (a - 3b)/(a + b)
E) 6a – 3b
a/b = 1/2   =&gt; b = 2a   A.	2a/b   = 2*(a/b)   (a + 1)/(b + 1)an be determined   B.	(a + b)/a   Dividing numerator and denominator by a ,   1+(b/a)   (a + 1)/(b + 1)an be determined   (a + 1)/(b + 1).	(a + 1)/(b + 1)   = (a + 1)/(2a+1)   Numerical value can't be determined   D.	(a - 3b)/(a + b)   Dividing numerator and denominator by b,   =(a/b - 3 )/ (a/b+ 1 )   (a + 1)/(b + 1)an be determined   E.	6a – 3b   = 6a - 3*2a = 0   Answer (a + 1)/(b + 1)6  - 3*2= 
<gadget id="calculator">6  - 3*2</gadget>
<output>0</output>
0   Answer (a + 1)/(b + 1)
<result>C</result>
If a/b = 1/2, then the numerical value of which of the following expressions cannot be determined?