It is permissible to place an eye splice in wire rope used as cargo gear providing the splice is made using（）.
A.two tucks with whole strands and one tuck with one-half strand
B.three tucks with whole strands and two tucks with 1/2 the wire cut from the tucking strand
C.three tucks with whole strands
D.two tucks with whole strands and three tucks with half strands
，把十位上与个位上的数字调换后，新数比原数大18，则原来这个两位数的两个数字和是（）