The posterior urethra is best visualized by -: (A) Static cystogram, (B) Retrograde urethrogram, (C) Voiding cystogram, (D) CT cystogram
Answer is C. Voiding cystourethrography is the best method to visualize posterior urethra.
Remember,
Urethra can be imaged radiographically in two ways. 

Anterograde techniques → Best for visualization of posterior urethra.

(This is done along with voiding cystourethrography or with voiding following excretory urography)

Retrograde technique → Best for examining the anterior (penile) urethra 

​(Contrast is injected through tip of urethra).