An ice cream parlor serves ice cream cones, milkshakes, and waffles with ice cream. the cost of an ice cream cone is $1.20, the cost of a milkshake is $2.00, and the cost of a waffle with ice cream is $3.50. if 50% of the customers choose an ice cream cone, 30% choose a milkshake, and 20% choose a waffle with ice cream, what is the expected value of the cost of one item served at the parlor?
$0.99
$1.00
$1.90
$2.00