Question

Grape growers cultivating the popular Thomson Seedless variety often use a particular plant growth-regulating hormone treatment specifically to significantly increase the size of individual berries, thereby improving the fruit's marketability and overall quality. Application of which specific hormone is commonly used to achieve this increase in berry size?

A IAA
B Cytokinin
C Ethylene
D Abscisic acid
E GA3 (Gibberellic acid)
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