thE Author impliEs thAt onE wAy thAt vhs proDuCErs won Control ovEr thE vCr mArkEt wAs By
A．CArEFully rEstriCting ACCEss to vCr tEChnology
B．giving up A slight EArly lEAD in vCr sAlEs in orDEr to improvE long-tErm prospECts
C．rEtAining A striCt monopoly on thE proDuCtion oF prErECorDED viDEotApEs
D．shAring Control oF thE mArkEting oF vhs-FormAt vCr's