Let E₁, E₂, E₃ be three mutually exclusive events such that P(E₁) = 2 + 3p/6, P(E₂) = 2 − p/8 and P(E₃) = 1 − p/2. If the maximum and minimum values of p are p1 and p2, then (p₁ + p₂) is equal to :
o ⅔
o 5/3
o 5/4
o 1