Compute unit prices for the following pairs and determine which of the two is the better deal:

(a) 3 for $0.98 or 8 for $2.99,

(b) 4 for $1.00 or 12 for $3.39,

(c) 24 oz. for $1.98 or 36 oz. for $2.49, and

(d) 2 lbs. for

$2.19 or 5 lbs. for $5.89?