Read the following context and choose the best option to answer the question.
Context: And then the boys told us they knew we had our periods when we wore our little purses . We did n't fool anyone . Today I find myself still carrying that little tiny purse .
Question: Why might they still use their mini purse ?
Options: 
- They have a habit of carrying it with them .
 - None of the above choices .
 - It helps them conceal their sanitary products .
 - It gains them a lot of attention .


It helps them conceal their sanitary products .