Which of the following action schemes in PDDL yield an applicable action in the initial state  𝐼 𝑛 𝑖 𝑡 ( 𝑇 𝑖 𝑟 𝑒 ( 𝐴 ) ∧ 𝐹 𝑙 𝑎 𝑡 ( 𝐴 ) ∧ 𝑃 𝑢 𝑛 𝑐 𝑡 𝑢 𝑟 𝑒 ( 𝐴 ) ∧ 𝑇 𝑖 𝑟 𝑒 ( 𝐵 ) ) ?Multiple choice

A

𝐴 𝑐 𝑡 𝑖 𝑜 𝑛 ( 𝐶 ℎ 𝑎 𝑛 𝑔 𝑒 ( 𝑥 , 𝑦 )   𝑃 𝑅 𝐸 𝐶 𝑂 𝑁 𝐷 : 𝑇 𝑖 𝑟 𝑒 ( 𝑥 ) ∧ 𝑃 𝑢 𝑛 𝑐 𝑡 𝑢 𝑟 𝑒 ( 𝑦 )   𝐸 𝐹 𝐹 𝐸 𝐶 𝑇 : 𝐹 𝑖 𝑥 𝑒 𝑑 ( 𝑦 ) )

B

𝐴 𝑐 𝑡 𝑖 𝑜 𝑛 ( 𝐶 ℎ 𝑎 𝑛 𝑔 𝑒 ( 𝑥 , 𝑦 )   𝑃 𝑅 𝐸 𝐶 𝑂 𝑁 𝐷 : 𝑇 𝑖 𝑟 𝑒 ( 𝑥 ) ∧ 𝑇 𝑖 𝑟 𝑒 ( 𝑦 ) ∧ 𝐹 𝑖 𝑥 𝑒 𝑑 ( 𝑦 )   𝐸 𝐹 𝐹 𝐸 𝐶 𝑇 : 𝐹 𝑖 𝑥 𝑒 𝑑 ( 𝑦 ) )

C

𝐴 𝑐 𝑡 𝑖 𝑜 𝑛 ( 𝐶 ℎ 𝑎 𝑛 𝑔 𝑒 ( 𝑥 , 𝑦 )       𝑃 𝑅 𝐸 𝐶 𝑂 𝑁 𝐷 : 𝑇 𝑖 𝑟 𝑒 ( 𝑥 ) ∧ 𝑇 𝑖 𝑟 𝑒 ( 𝑦 ) ∧ ¬ 𝐹 𝑙 𝑎 𝑡 ( 𝑥 ) ∧ 𝑃 𝑢 𝑛 𝑐 𝑡 𝑢 𝑟 𝑒 ( 𝑦 )     𝐸 𝐹 𝐹 𝐸 𝐶 𝑇 : 𝐹 𝑖 𝑥 𝑒 𝑑 ( 𝑦 ) )

D

𝐴 𝑐 𝑡 𝑖 𝑜 𝑛 ( 𝐶 ℎ 𝑎 𝑛 𝑔 𝑒 ( 𝑥 , 𝑦 )   𝑃 𝑅 𝐸 𝐶 𝑂 𝑁 𝐷 : 𝐹 𝑙 𝑎 𝑡 ( 𝑥 ) ∧ ¬ 𝐹 𝑙 𝑎 𝑡 ( 𝑦 )   𝐸 𝐹 𝐹 𝐸 𝐶 𝑇 : 𝐹 𝑖 𝑥 𝑒 𝑑 ( 𝑦 ) )

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