Two vectors a and b are given. Determine the dot products a ⋅ b and a ⋅ a:
a = -17i - 9j, b = -8i - 12j

• A. a ⋅ b = 28, a ⋅ a = 208
• B. a ⋅ b = -28, a ⋅ a = -208
• C. a ⋅ b = 136, a ⋅ a = 81
• D. a ⋅ b = 244, a ⋅ a = 370

Answer: (D)