unable to install Xamarin.Android.Support.v7,Android.Suppor

Question

unable to install 

Xamarin.Android.Support.v7.AppCompat,Xamarin.Android.Support.Design, Xamarin.Android.Support.v4 how to resolve this issue.....

 

 Xamarin.Android.Support.v7.AppCompat

Severity Code Description Project File Line Suppression State

Error Could not install package 'Xamarin.Android.Support.v7.AppCompat 25.3.1'. You are trying to install this package into a project that targets 'MonoAndroid,Version=v5.0', but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author. 0

 

 

 Xamarin.Android.Support.v4

Severity Code Description Project File Line Suppression State

Error Could not install package 'Xamarin.Android.Support.v4 25.3.1'. You are trying to install this package into a project that targets 'MonoAndroid,Version=v5.0', but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author. 0

 

Xamarin.Android.Support.Design 

Severity Code Description Project File Line Suppression State

Error Could not install package 'Xamarin.Android.Support.Design 25.3.1'. You are trying to install this package into a project that targets 'MonoAndroid,Version=v5.0', but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author. 0