In sequential order, the pathway from sperm production to the external environment is from A) seminiferous tubules to epididymis to ductus deferens to urethra B) urethra to ductus deferens to seminiferous tubules to epididymis C) seminiferous tubules to ductus deferens to epididymis to urethra D) epididymis to seminiferous tubules to ductus deferens to urethra