Which of the following is the correct reducing order of bond-angle [BHU 2000]

• A. \[N{{H}_{3}}<C{{H}_{4}}<{{C}_{2}}{{H}_{2}}<{{H}_{2}}O\]
• B. \[{{C}_{2}}{{H}_{2}}>N{{H}_{3}}>{{H}_{2}}O<C{{H}_{4}}\]
• C. \[N{{H}_{3}}>{{H}_{2}}O>C{{H}_{4}}<{{C}_{2}}{{H}_{2}}\]
• D. \[{{H}_{2}}O<N{{H}_{3}}>C{{H}_{4}}<{{C}_{2}}{{H}_{2}}\]