Answer:
A. is not true
Explanation:
appears to be acute, and
appears to be its obtuse supplement.
Just to be sure the diagram isn't lying to you, set this up:
4x + 9 + (9x - 11) = 180
13x - 2 = 180
13x = 182
x = 14
![m\angle{BCA}=65^\circ\\m\angle{BCD}=115^\circ](https://img.qammunity.org/2022/formulas/mathematics/high-school/riehm6u1i8ocsk3fvbepf9mftqoxvxikfj.png)
Those two angles are not congruent.