Estimate an Answer to the Problem $\$ 70$ B) $\$ 60$ C) $\$ 80$

Multiple Choice

Estimate an answer to the problem.
-An advertisement states that television sets are on sale at B&G Electronics. The sale prices are: 13-inch set, $147.99; 19-inch set, $208.95; 21-inch set, $231.99; 27-inch set, $289.97; 50-inch set, $519.97. Estimate to the nearest ten how much more a 21-inch set costs than a 13-inch set.

A) $\$ 70$
B) $\$ 60$
C) $\$ 80$
D) $\$ 90$