What is the best title for this passage

A．They had to stand under the pressure three times the force of gravity.
B．Ten days later in the test, they had to spend other twenty days in bed.
C．During the whole test, they suffered backaches and other discomfort.
D．Some of the women suffered great loss of calcium.

A．the women stayed together during the whole test
B．most of the women taking part in the test are very active.
C．before the test, the women enjoyed smoking and drinking.
D．all the women taking part in the test traveled to space at last