Let S_0 denote the prices of assets at time 0. Their values at time T are given by matrix D. Determine if the markets given in (a) and (b) are complete and if there is no arbitrage. (a) S_0 = (1 15), D = (1 20 1 10); market complete? no arbitrage? (b) S_0 = (1 15), D = (1 20 1 15 1 10); market complete? no arbitrage