填空题
A) LOC(aij)=LOC(a11)+i×(i+1)/2+i B) LOC(aij)=LOC(a11)+i×(i+1)/2+(i-1) C) LOC(aij)=LOC(a11)+i×(i-1)/2+i D) IOC(aij)=LOC(a11)+i×(i-1)/2+(i-1)