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Which of the following INT $21$ functions must be used when printing a string $?$

Question $1$Answer

a$.$

MOV AH$,2$

b$.$

None of the given options

c$.$

MOV AH$,7$

d$.$

MOV AH$,1$

e$.$

MOV AH$,4$CH

f$.$

MOV AH$,9$