What is the main difference between acne vulgaris and acne rosacea?

a. Acne rosacea is a result of an infection and can be treated with antibiotics, while vulgaris is not caused by an infection.
b. Acne rosacea is a result of an infection and can be treated with antiviral medication, while acne vulgaris is not caused by an infection.
c. Acne vulgaris is a result of an infection and can be treated with antibiotics, while acne rosacea is not caused by an infection.
d. Acne vulgarus is a result of an infection and can be treated with antiviral medication, while acne rosacea is not caused by an infection.