"It ran short of troops to continue on to Richmond" can be said of the Union army during the brutal Wilderness Campaign.
Answer: Option A
Step-by-step explanation:
Tactically the regular army was defeated in each major battle and engagement within the brutal campaign. However rather than receding back to Washington once a defeat General Grant and therefore the regular army unbroken pressing on south and eastward. This force Lee and therefore the Army of North Virginia to get back the south and west to dam the regular army from reaching Richmond.
Though the regular army lost a lot of men in each battle the regular army may afford the loses, whereas the military of North Virginia couldn't survive the loss of men and material. Strategically the South was losing the war, whereas the Union was losing the battles.