Find each indicated quantity if it exists Let f(x)={6+x,forx06x,forx>0. Complete parts (A) through (D). (A) Select the correct choice below and, if nocessary, fill in the answer box to complete your choice. A. limx0+f(x)= (Type an integer.) B. The limit does not exist. (B) Seloct the correct choice below and, if necessary, fill in the answer box to complete your choice. A. limx0f(x)= (Type an integer) B. The limit does not exist. (C) Seloct the correct choice below and, if necessary, fill in the answer box to complete your choice. A. limx0f(x)= (Type an integer.) B. The limit does not exist (D) Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. f(0)= (Type an integer.) B. The function is not defined at x=0