Why were German oil supplies a critical strategic target in WWII, and which operation exemplified this tactic?

• A. Oil was unimportant to German war production.
• B. Oil power underpinned the German war effort; Ploesti raids targeted Romanian oil fields to cripple German industry
• C. Germany relied on coal, not oil for energy
• D. Allied bombing of oil fields had no impact on German production.

Answer: (B)