Which local anesthetic causes vasoconstriction – a) Cocaineb) Lidocainec) Bupivacained) Procaine: (A) ac, (B) bc, (C) ad, (D) b
Answer is A. All LAs are vasodilators except cocaine. Cocaine causes vasoconstriction.

"Ropivacaine and bupivacaine also cause vasoconstriction". 
─ Goodman & Gilman