Assume that UART OutChar function is available. Can the result be displayed and returned to the calling program? Why? AREA 1. text|, CODE, READONLY, ALIGN=2 THUMB \( \begin{array}{ll}\text { sum3 } & \text { PROC } \\ & \text { EXPORT sum3 } \\ \text { IMPORT UART_OutChar } \\ \text { LDR R5, =N1 } \\ \text { LDR R6, =N2 } \\ \text { LDR R7, =N3 } \\ \text { LDR R1, [R5] } \\ \text { LDR R2, [R6] } \\ \text { LDR R3, [R7] } \\ \text { ADD R4, R1, R2 } \\ \text { ADD R4, R4, R3 } \\ \text { MOV R1, R4 } \\ \text { UART_OutChar } \\ \text { BX LR } \\ \text { N1 } \\ \text { DCD \#11 } \\ \text { D2 \# \#12 } \\ \text { NCD } \\ \text { DCD \#13 } \\ \text { ALIGN } \\ \text { END }\end{array} \)