**Core Concept**
The question is testing knowledge about cyanotic congenital heart diseases that can manifest as congestive cardiac failure in the neonatal period. This involves understanding the pathophysiology of various cyanotic heart defects and their clinical presentations.

**Why the Correct Answer is Right**
Tetralogy of Fallot (TOF) is the most common cyanotic congenital heart disease that can present with congestive cardiac failure in the first week of life. This is because TOF often has a severe pulmonary stenosis component, leading to right-to-left shunting and decreased pulmonary blood flow, which can cause hypoxia and acidosis. This can lead to a vicious cycle of decreased cardiac output, increased peripheral resistance, and ultimately congestive cardiac failure. Additionally, the presence of a large VSD in TOF can cause excessive left-to-right shunting, leading to increased pulmonary blood flow and further strain on the right heart, exacerbating the congestive cardiac failure.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because Tricuspid Atresia is a cyanotic heart disease, but it typically presents later in infancy or childhood, often with a more gradual onset of symptoms.

**Option B:** This option is incorrect because Ebstein's Anomaly is a cyanotic heart disease, but it typically presents later in childhood or adolescence, often with a more gradual onset of symptoms.

**Option C:** This option is incorrect because Truncus Arteriosus is a cyanotic heart disease, but it typically presents later in infancy or childhood, often with a more gradual onset of symptoms.

**Clinical Pearl / High-Yield Fact**
In cyanotic congenital heart diseases, the presence of a large VSD can lead to excessive left-to-right shunting, causing increased pulmonary blood flow and further strain on the right heart, which can exacerbate congestive cardiac failure.

**Correct Answer:** C. Tetralogy of Fallot