Write a program that translates the following expressions to ARM Cortex MO assembly language:

Leave the result of the expression in RO$.$

Variables ${?}_{(})$

Use RO for $a$:$a=20$

Use R$1$ for $b$:$b=15$

Use R$2$ for $c$:$c=10$

Use R$3$ for $d$:$d=5$

Use R$4$ as your scratch $($temporary$)$ variable, if needed

Expressions

First expression: $a+b-c+1$

Second expression: $a^{*}4+b-d^{*}2$

Third expression: $a-b+a*4-c+1$