Lara Shoes Inc., makers of fashion footwear, launched an advertising campaign promoting a new range of stilettos. While its older range of stilettos was priced at $$90$ a pair, the new range is being sold at $$65.$ To provide value for consumers, Lara Shoes Inc. has used the strategy of

a$.$ deceptive advertising

b$.$ mere exposure effect

c$.$ just meaningful difference

d$.$ just noticeable difference