Find equivalent capacitance between points `A` and `B`,

Answer

B, C

Explanation

a. Simple circuit is as shown below

b. The simple circuit is as shown below

c. Let `C_(AB)=x.Then`

Now, `C_(AB)=C+((2C)(x))/(2C+x)`
or `x=c+(2C_x)/(2C+x)`
Solving this equation we get
`x=2C`