Question: Which of the following statements is correct regarding the epidemiology of mood disorders ?: 
 Options:  <1> Bipolar disorders account for 25-30% of all mood disorders. <2> The average duration of a depressive episode is usually about 2-3 months. <3> The percentage of relapses of depression throughout life is estimated at 75%. <4> The risk of suicide in depressive disorder is greater than bipolar disorder. <5> 50% or more of the history of bipolar disorder is found in the families of patients with depression.
3