Task: Question Answering
Input (English): Question: In the scheme of the stages of Tanner's pubertal development, the stage or level 5 in women corresponds to: 
 Options:  <1> Light bulge of the breast button and increase of the areolar size. <2> Growth of the breast, presence of light pubic hair and roundness of the hips. <3> Slight mammary protrusion and beginning of roundness of the hips. <4> Full development of the breast and triangle of full pubic hair as in adult women. <5> The beginning of the thelarchy.
Output (English): 4