**Core Concept**
The sympathetic nervous system plays a crucial role in regulating vascular tone through various receptor subtypes. Alpha 1 and Beta 2 adrenergic receptors are key players in this process, mediating vasoconstriction and vasodilation, respectively.

**Why the Correct Answer is Right**
Alpha 1 adrenergic receptors are primarily located on vascular smooth muscle cells and cause vasoconstriction by stimulating the Gq protein-coupled receptor, leading to an increase in intracellular calcium and subsequent contraction of the muscle cells. On the other hand, Beta 2 adrenergic receptors, found on vascular endothelial cells, induce vasodilation through the stimulation of the Gs protein-coupled receptor, resulting in the release of nitric oxide (NO) and endothelium-derived relaxing factor (EDRF), which relaxes the vascular smooth muscle cells. This synergy between Alpha 1 and Beta 2 receptors allows for precise regulation of vascular tone.

**Why Each Wrong Option is Incorrect**
**Option A:** Alpha 2 receptors are primarily presynaptic receptors that inhibit the release of norepinephrine, and they do not directly mediate vasoconstriction or vasodilation.
**Option B:** Beta 1 receptors are primarily found on cardiac myocytes and mediate positive chronotropy and inotropy, but they do not cause vasodilation.
**Option D:** Beta 1 and Beta 2 receptors both mediate vasodilation, but they do not exhibit the combination of vasoconstriction and vasodilation as described in the question.

**Clinical Pearl / High-Yield Fact**
It is essential to remember that the Alpha 1 to Beta 2 ratio in the vasculature is crucial for determining the overall effect of sympathetic stimulation. A higher Alpha 1 to Beta 2 ratio leads to vasoconstriction, while a lower ratio results in vasodilation.

**✓ Correct Answer: C. Alpha 1 and Beta 2**