Two vectors a and b are given. Determine the dot products a ⋅ b and a ⋅ a:
a = 11i - 3j, b = -10i - 8j

• A. a ⋅ b = 86, a ⋅ a = -112
• B. a ⋅ b = -134, a ⋅ a = -112
• C. a ⋅ b = -86, a ⋅ a = 130
• D. a ⋅ b = -33, a ⋅ a = 80

Answer: (C)