Given the simply supported beam below:

$($PLEASE SHOW STEPS AND EXPLANTION FOR EVERY PART$)$

PART $1$

The equation of the shear force $($V$)$ in segment AC indicates that the V diagram that is a$\_\_\_\_\_($Select from one the following$)$

Option A: Horizontal Line

Option B: Curve of $3$rd degree

Option C: Straight line

Option D: Curve of $2$nd degree

PART $2$

Using the x coordinate as shown. The equation of the bending moment $($M$)$ in segment CB indicates that the M diagram that is a $\_\_\_\_\_($Select from one of the following$)$

Option A: Straight line with a negative slope

Option B: Straight line with a positive slope

Option C: Curve of $3$rd degree

Option D: Curve of $2$nd degree

Option E: Horizontal line

PART $3$

The maximum moment in lb$-$ft is mostly near$\_\_\_\_\_($Select from one of the following$)$

Option A: $-350$

Option B: $+350$

Option C: $+600$

Option D: $-1750$

Option E: $+1750$

Option F: $-600$