Which of these is/are true about conditions that affect the skeleton?
1. In achondroplasic dwarfism, the skeleton remains cartiliginous throughout life
2. Excessive cola consumption can lead to bone loss in women
3. Anabolic steroid use allows male athletes to grow taller but only if they begin use in adolescence
4. Osteosarcoma is the most deadly for of bone cancer, and it affects males more than it does females
a) 1 & 3
b) 2 &4
c) 1, 2 & 3
d) 4 only
e) all of the above