Answer:
m<A cannot be bigger than 130:
Explanation:
m<B = (180 - 130) degrees = 50 degrees
every single triangle has 180 degrees.
So:
180 - m<A - m<B - m<C = 0
m<C cannot be negative or equal to 0
if m<A >= 130:
180 - 130 - 50 - m<C is not equal to 0.
this means the function m<A has to smaller than 130.
Many angles can be represented in a negative form, but not in 2d geometry.
I would recommend you to try option 2, option 4 is also correct.