Answer:
D. is the correct answer.
Step-by-step explanation:
We can use sin cos tan method to solve Mx:
![(Mx)/(5)=cos(37)](https://img.qammunity.org/2023/formulas/physics/college/7s60t1259lmjtw6rkopuu85fg4c4mmetb8.png)
![Mx= cos(37) * 5](https://img.qammunity.org/2023/formulas/physics/college/hfdc7uiwggdhb3wpu65hihfyi9nqr406y8.png)
![Mx = 4](https://img.qammunity.org/2023/formulas/physics/college/8y9su86u7xc3yygbg5518jyxvk25lz78dg.png)
So Mx should be 4 and head to right. as its positive.
We can use sin cos tan method to solve My:
![(My)/(5) = sin(37)](https://img.qammunity.org/2023/formulas/physics/college/2jvs1u19ytoiwzlczefll3hfwi54xiu7bp.png)
![My = sin(37) * 5](https://img.qammunity.org/2023/formulas/physics/college/tgzlzl8x8jr3a6w5jixe6zbhvvyil0h7rk.png)
![My = 3](https://img.qammunity.org/2023/formulas/physics/college/kzrkhqw7my80jul3zly4jw2o71hlvwbxwu.png)
So My should be 3 and head to upwards. as its positive.
Final conclusion: D. is the correct answer.