以下程序运行,str2中保存的值是 str1="\nI learned to ride a bycicle three times last month " str2=str1.lstrip() str2=str2.rstrip()
A.
"I learned to ride a bycicle three times last month"
B.
"I learned to ride a bycicle three times last month "
C.
"I learned to ride a bycicle three times last month "
D.
"\nI learned to ride a bycicle three times last month "