During pitching a baseball, at ball release, what position is the elbow in?

Question

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The elbow is slightly flexed at ball release, which allows for greater control and energy transfer during the pitch. A fully extended elbow (choice A) is not possible due to limits in human anatomy, and a markedly flexed elbow (choice D) can result in injury. A moderately flexed elbow (choice C) may be seen in some pitchers, but a slightly flexed elbow is generally considered the most effective position at ball release.

During Pitching a Baseball, at Ball Release, What Position Is °\degree°

During Pitching a Baseball, at Ball Release, What Position Is $\degree$