The FT1000 valid 12 1800-1200 is what you need .... last line BECMG 1012 -RA=

Sometime during the period 1000 to 1200 the weather WILL become LIGHT RAIN

Could be 1000, could be 1200 .... so the answer is LIGHT RAIN.

The questions SHOULD be consistent ... any problems, let me know.