Give two different explanations why the following three periodic tasks are schedulable by the rate - monotonic algorithm: τ₁ ≡ {0.8, 2}, τ₂ ≡ {1.4, 4}, and τ₃ ≡ {2, 8}. Here, the notation τ_i ≡ {e_i , p_i} gives the execution time, e_i, and period, p_i, of task τ_i .