For each system, determine if it is in standard form. Maximize P=2x1+2x2+7x3 subject to the constraints x1x2+x35x12x10x20x30 A. Yes, in standard form. B. No, not in standard form. P=6x1+x2 subject to the constraints 10x1+x229x1x23x10x20 A. Yes, in standard form. B. No, not in standard form. Maximize P=3x1+7x2 subject to the constraints 7x1+x2x1+9x2x1010450 A. Yes, in standard form. B. No, not in standard form. Maximize P=4x1+6x2+x3 subject to the constraints x1+10x2+2x3x1100 A. Yes, in standard form. B. No, not in standard form. Maximize P=x1+7x2+x3 subject to the constraints 3x1+x2+x377x1+6x2x38x10x20x30 A. Yes, in standard form. B. No, not in standard form