\[\Delta PQR\] is constructed such that \[PQ=5\text{ }cm,\] \[PR=5\text{ }cm\] and \[\angle RPQ={{50}^{o}}\] Identify the type of triangle constructed.

• A.  An isosceles triangle
• B.  An acute angled triangle
• C.  An obtuse angled triangle
• D.  Both [a] and [b]