Which expression gives the same result as ∑4i=0(5)(1/3)i?

I'm assuming which expression gives the same result as ∑^4The choices are:i=0^(5) (1/3)^i
The second option is correct since the first option is erroneous or makes little sense. The second option and the ∑^4 are geometric progressions which will account for each other when substituted together or one into another.