Hasney's Boutiques Clothing is having a 20% off sale during which shirts cost $30.00 and pants cost $60.00. On the day of the sale, Hasney's sells a total of 60 shirts and pants and earned a total of $2,250. On a regular day, Hasney's sells 23 the number of shirts and pants sold during the sale and earns a total of $1,875. Solving which of the following systems of equations yields the number of shirts, s, and the number of pants, p, sold during a regular day?