Answer:
the first choice or choice a
Explanation:
you started with d dollars so your taking 21 away; d-21
you know there's at least 53 in the account which means the sign is greater than or equal to because there either 53 dollars in the account or more
the same applies for 74 which is 53 +21 but if there was more than 53 it would be greater than 74 therefore it also has to have the greater than or equal to sign