Will option adjustable-rate mortgage morph into a consumer-lending product that borrowers use to finance consumption? The answer will depend on what happens in the housing market, a new analysis by Dominion Bond Rating Service suggests. One of the mortgage market’s most controversial products, option ARMs allow borrowers to choose among minimum payment, interest-only, and fully-amortized payment options each month. Analysts have become concerned that the risks associated with the products have been increased through…