For Women,soy Consumption May Lower the Risk for Osteoporosis Because

For women,soy consumption may lower the risk for osteoporosis because ________.

A)  it prevents the kidneys from excreting calcium 
B)  of the bioavailable calcium 
C)  of its stable hydroxyapatite crystal formation 
D)  its phytochemicals mimic the actions of estrogen in the body 
E)  calcium alginate is used to process the soy bean