Sam and his friends, Tom and Vanessa, wanted to find out the conditions needed for mould to grow. They prepared the set-ups as shown in the diagram below.

The set-ups were kept at the locations and conditions as shown in the table below.

Set-up ASet-up BSet-up C
Locationkitchenfreezerkitchen
Temperature of location30ºC0ºC30ºC

Three days later, they found mould growing on the rice in Set-up C but not in Set-ups A and B.

Based on their observation, Sam and his friends suggested why mould did not grow in Set-ups A and B.

Sam: “There was a lack of moisture in Set-up A.”

Tom: “There was not enough warmth in Set-up B.”

Vanessa: “There was not enough air in Set-up B.”

Who made the correct statement(s)?

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