14 - march fracture

1q: what is march fracture ?

a- fatigue fracture of the shaft of the 2nd or 3rd metacarpal
b- fatigue fracture of the shaft of the 2nd or 3 rd metatarsal
c- type of ankle fracture
d- type of acetabular frx

answer b . March indicates the march fast done by the army personnel where they bang the feet hardly to the ground .