The terms of an infinite series $S$ are formed by adding together the corresponding terms in two infinite geometric series, T and U .
The first term of T and the first term of U are each 4.
In order, the first three terms of the combined series $S$ are 8,3 , and $\frac { 5 } { 4 }$
What is the sum to infinity of $S$ ?
A $\frac { 32 } { 5 }$
B $\frac { 20 } { 3 }$
C $\frac { 64 } { 5 }$
D $\frac { 40 } { 3 }$
E 16
F 32