There are 8 red tegu lizards in the reptile house at a local zoo. If the average length of the red tegu lizards is 10

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There are 8 red tegu lizards in the reptile house at a local zoo. If the average length of the red tegu lizards is 10 inches, then how many of the red tegu lizards are exactly 10 inches long?

(1) None of the red tegu lizards are shorter than 10 inches.

(2) None of the red tegu lizards are longer than 10 inches.

Answer: D

Source: Veritas Prep
Source: — Data Sufficiency |