Jeans were not popular in some countries for ______ reasons.

A．Nowadays science is learning more and more about the impact humidity has on all of us by using sophisticated measuring devices.
B．Humidity could interfere with television signals.
C．Humidity may warp priceless antiques.
D．Visual disturbances may decrease in days of low humidity.

A．Because they got poor reception.
B．Because the humidity was interfering with the signals.
C．Because there came a blast of dry air.
D．Because humidity increased rapidly in the region.