Which statement about Master detail relationships is true?

The sales department has requested the report author to build a report which combines a list with a chart. The list must contain product lines and the chart should show details for each product line. The report author decided to use a Master detail relationship to build this report.

Which statement about Master detail relationships is true?
A . Calculations across Master detail queries can be performed.
B . Parent data in the child frame or child data in the parent frame can be displayed.
C . Master detail relationships must appear in nested frames to produce the correct results.
D . When working with an SAP BW Data source, a data item from the master query that contains non-ASCII values can be used.

Answer: C

Explanation:

Reference: https://www.ibm.com/support/knowledgecenter/SSEP7J_11.0.0/ com.ibm.swg.ba.cognos.ug_cr_rptstd.doc/t_cr_rptstd_modrep_create_master_detail_relationship_rel.html