You are given a paragraph, a question and some answer options (associated with "A", "B", "C", "D", etc.) You need to list all the correct answer options with their associated letters (e.g. "A" can be a valid answer). Note that sometimes, more than one option can answer the question correctly and completely. In those cases, please generate all such options separated by a comma (e.g. "A, B" is a valid answer). Do not generate anything else apart from one or more of the following characters: 'A', 'B, 'C', 'D', etc.

[EX Q]: Paragraph- Sent 1: Conduction is the transfer of thermal energy.
Sent 2: It occurs between objects or substances that are touching.
Sent 3: Thermal conductors are materials that are good conductors of heat.
Sent 4: Thermal insulators are materials that are poor conductors of heat.
Sent 5: Both conductors and insulators have important uses.
Sent 6: Convection is the transfer of thermal energy.
Sent 7: This occurs as particles move within a fluid.
Sent 8: The fluid may be a liquid or a gas.
Sent 9: The particles within the fluid transfer energy by moving from warmer to cooler areas.
Sent 10: They move in loops.
Sent 11: These loops are called convection currents.
Sent 12: Radiation is the transfer of thermal energy by waves.
Sent 13: These waves can travel through empty space.
Sent 14: When the waves reach objects, the heat is transferred to the objects.
Sent 15: Radiation is how the Sun warms the Earths surface.
Question: Waves that transfer thermal energy through empty space are called (A) Convection (B) Conduction (C) Radiation.
[EX A]: C.

[EX Q]: Paragraph- Sent 1: The factory is highly automated and designed to shift flexibly to produce many different kinds of chips to suit demand.
Sent 2: "The diversity is the big difference with this plant," said Richard Doherty, president of Envisioneering, a research firm.
Sent 3: "It gives IBM the capability to make so many different kinds of custom chips, and the world is going to custom chips."Sent 4: The 140,000-square-foot plant is a testament to advanced manufacturing technology.
Sent 5: The 300-millimeter silicon wafers -- about the size of a standard pizza -- are shuttled around the facility in enclosed plastic pods, which ride on overhead tracks.
Sent 6: They drop down from wires automatically into machines, sheathed in stainless steel and glass, for each stage of processing and fabrication.
Sent 7: Throughout the 500 processing steps, which typically last 20 days, the wafers are not touched by human hands.
Sent 8: The circuits etched into the chips are less than one thousandth the width of a human hair.
Sent 9: Human operators are there to monitor the systems, catch errors and fine-tune the production process for maximum efficiency.
Sent 10: Because each of the hundreds of processing machines is self-enclosed, and essentially airtight, the uniforms operators wear are less constricting than in the previous generation of chip plants, which looked like space suits.
Sent 11: The operators at the East Fishkill factory wear light nylon uniforms, light blue shoe coverings and translucent hair nets made of paper.
Sent 12: They look more like workers in a bakery.
Sent 13: Yes, said Richard Brilla, director of the new facility, "but the donuts are a lot more costly here."Sent 14: Each wafer, holding hundreds of chips, is worth $6,000 to $10,000 apiece, depending on what insulation, circuitry and materials are used.
Question: Why do operators at the East Fishkill factory look like workers in a bakery? (A) As the wafers are the size of a standard pizza (B) Since the processing machines are self-enclosed (C) Since they seem to wear space suits (D) Since they wear light uniforms, shoe coverings and hair nets (E) This is because they wear light nylon uniforms, light blue shoe coverings and translucent hair nets made of paper (F) They make donuts.
[EX A]: D, E.

[EX Q]: Paragraph- Sent 1: You might want to know how cold it is.
Sent 2: You may need to know how fast the wind is blowing.
Sent 3: Maybe it rained last night?
Sent 4: Do you know how much?
Sent 5: Does it feel humid to you?
Sent 6: You have heard all these questions before.
Sent 7: To answer these questions, we need data.
Sent 8: That data comes from special tools.
Sent 9: These tools collect data about the weather.
Sent 10: You can see some of the common tools listed below: A thermometer measures temperature.
Sent 11: An anemometer measures wind speed.
Sent 12: A rain gauge measures the amount of rain.
Sent 13: A hygrometer measures humidity.
Sent 14: A wind vane shows wind direction.
Sent 15: A snow gauge measures the amount of snow.
Question: What are two types of tools that collect wind data? (A) Rain gauge (B) "An anemometer and a wind vane" (C) Wind vane (D) Thermometer (E) Barometer (F) Hygrometer (G) A weather vane (H) An anemometer.
[EX A]:
B, C, G, H.