Sydney is building an application with XSLT 2.0 that relies on many date formats and calculations. He comes to you for some assistance in developing these formats and calculations correctly.
-One section of the new application requires Sydney to add 2 years and 6 months to the current date. Which of the following expressions do you tell him will provide the correct result?
A) current-date() + xs:yearMonthDuration('p2y6m')
B) current-date() + xs:yearMonthDuration('PY2M6')
C) current-date() + xs:yearMonthDuration('P2Y6M')
D) current-date() + xs:yearMonthDuration('py2m6')

Question

Sydney is building an application with XSLT 2.0 that relies on many date formats and calculations. He comes to you for some assistance in developing these formats and calculations correctly. 
-One section of the new application requires Sydney to add 2 years and 6 months to the current date. Which of the following expressions do you tell him will provide the correct result?
A) current-date() + xs:yearMonthDuration('p2y6m')
B) current-date() + xs:yearMonthDuration('PY2M6')
C) current-date() + xs:yearMonthDuration('P2Y6M')
D) current-date() + xs:yearMonthDuration('py2m6')

Quizplus · Accepted Answer

According to the ISO standard, the correct format for a duration of 2 years and 6 months is 'P2Y6M'. Option A and D contain lowercase 'p' and 'y', which are not valid according to the standard. Option B uses the wrong order of '2M6' instead of '6M2'. Therefore, option C is the correct choice.

Sydney Is Building an Application with XSLT 2