If productCost and productPrice are numeric variables, and productName is a string variable, which of the following
statements are valid assignments? If a statement is not valid, explain why not.

a. productCost = 100
b. productPrice = productCost
c. productPrice = productName
d. productPrice = "24.95"
e. 15.67 = productCost
f. productCost = $1,345.52
g. productCost = productPrice - 10
h. productName = "mouse pad"
i. productCost + 20 = productPrice
j. productName = 3-inch nails
k. productName = 43
l. productName = "44"
m. "99" = productName
n. productName = brush
o. battery = productName
p. productPrice = productPrice
q. productName = productCost